{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-16T09:59:40Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-ES-0T134SO044",
    "type": "line",
    "country": "es",
    "name": "Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork: Spain public contracts since 2024",
    "url": "https://assay-systems.com/register/es/line/construction-work-for-pipelines-communication-and-power-lines-for-highways-roads-airfields-and-railways-flatwork/",
    "text": [
      "Since January 2024 the line carries 1,243 award notices from 374 buyers. 1,377 suppliers share it.",
      "354 in 2024. 459 in 2025. 430 in the first 9 months of 2026.",
      "709 of them had no award notice in the register from November 2023 to 2024.",
      "Names every buyer behind the figures and, for each award notice, the supplier, the award date, the notice number and the value where one is disclosed, and the notices behind every figure.",
      "Share of the line held by each of its largest suppliers, by number of award notices, in the TED register for Spain."
    ],
    "records": [
      {
        "name": "all lines",
        "url": "https://assay-systems.com/register/es/"
      },
      {
        "name": "FERROVIAL CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/ferrovial-construccion-s-a/"
      },
      {
        "name": "ACSA OBRAS E INFRAESTRUCTURAS SAU",
        "url": "https://assay-systems.com/register/es/acsa-obras-e-infraestructuras-sau/"
      },
      {
        "name": "ACSA, OBRAS E INFRAESTRUCTURAS, S.A.U.",
        "url": "https://assay-systems.com/register/es/acsa-obras-e-infraestructuras-s-a-u/"
      },
      {
        "name": "Api movilidad S.A.",
        "url": "https://assay-systems.com/register/es/api-movilidad-s-a/"
      },
      {
        "name": "SIEMENS RAIL AUTOMATION, S.A.U.",
        "url": "https://assay-systems.com/register/es/siemens-rail-automation-s-a-u/"
      },
      {
        "name": "SOCIEDAD IBÉRICA DE CONSTRUCCIONES ELÉCTRICAS, S.A.",
        "url": "https://assay-systems.com/register/es/sociedad-iberica-de-construcciones-electricas-s-a/"
      },
      {
        "name": "EIFFAGE INFRAESTRUCTURAS, S.A",
        "url": "https://assay-systems.com/register/es/eiffage-infraestructuras-s-a/"
      },
      {
        "name": "EULEN, S.A.",
        "url": "https://assay-systems.com/register/es/eulen-s-a/"
      },
      {
        "name": "PAVASAL EMPRESA CONSTRUCTORA, S.A.U.",
        "url": "https://assay-systems.com/register/es/pavasal-empresa-constructora-s-a-u/"
      },
      {
        "name": "ACCIONA CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/acciona-construccion-s-a/"
      },
      {
        "name": "VIAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/vias-y-construcciones-s-a/"
      },
      {
        "name": "ALDESA CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/aldesa-construcciones-s-a/"
      },
      {
        "name": "CHM OBRAS E INFRAESTRUCTURAS SA",
        "url": "https://assay-systems.com/register/es/chm-obras-e-infraestructuras-sa/"
      },
      {
        "name": "ELECNOR SERVICIOS Y PROYECTOS SAU",
        "url": "https://assay-systems.com/register/es/elecnor-servicios-y-proyectos-sau/"
      },
      {
        "name": "OBRASCON HUARTE LAIN SA",
        "url": "https://assay-systems.com/register/es/obrascon-huarte-lain-sa/"
      },
      {
        "name": "ROMIAN PRODUCCIONES, S.L.",
        "url": "https://assay-systems.com/register/es/romian-producciones-s-l/"
      },
      {
        "name": "TECSA, EMPRESA CONSTRUCTORA, S.A.",
        "url": "https://assay-systems.com/register/es/tecsa-empresa-constructora-s-a/"
      },
      {
        "name": "ASCH INFRAESTRUCTURAS Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/asch-infraestructuras-y-servicios-s-a/"
      },
      {
        "name": "BECSA, S.A.",
        "url": "https://assay-systems.com/register/es/becsa-s-a/"
      },
      {
        "name": "CAMPEZO OBRAS Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/campezo-obras-y-servicios-s-a/"
      },
      {
        "name": "COMSA, S.A.U.",
        "url": "https://assay-systems.com/register/es/comsa-s-a-u/"
      },
      {
        "name": "CRC Obras y Servicios, SL",
        "url": "https://assay-systems.com/register/es/crc-obras-y-servicios-sl/"
      },
      {
        "name": "LANTANIA S.A.U",
        "url": "https://assay-systems.com/register/es/lantania-s-a-u/"
      },
      {
        "name": "PADECASA OBRAS Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/padecasa-obras-y-servicios-s-a/"
      },
      {
        "name": "TECNOLOGIA DE LA CONSTRUCCION Y OBRAS PUBLICAS, S.A.",
        "url": "https://assay-systems.com/register/es/tecnologia-de-la-construccion-y-obras-publicas-s-a/"
      },
      {
        "name": "VALLINA EVENTOS S.L.",
        "url": "https://assay-systems.com/register/es/vallina-eventos-s-l/"
      },
      {
        "name": "AGRUPACIÓN GUINOVART OBRAS Y SERVICIOS HISPANIA, S.A.",
        "url": "https://assay-systems.com/register/es/agrupacion-guinovart-obras-y-servicios-hispania-s-a/"
      },
      {
        "name": "COPCISA, S.A.",
        "url": "https://assay-systems.com/register/es/copcisa-s-a/"
      },
      {
        "name": "DRAGADOS S.A.",
        "url": "https://assay-systems.com/register/es/dragados-s-a/"
      },
      {
        "name": "IMESAPI, S.A.",
        "url": "https://assay-systems.com/register/es/imesapi-s-a/"
      },
      {
        "name": "LICUAS S.A.",
        "url": "https://assay-systems.com/register/es/licuas-s-a/"
      },
      {
        "name": "ROGASA CONSTRUCCIONES Y CONTRATAS, S.A.U.",
        "url": "https://assay-systems.com/register/es/rogasa-construcciones-y-contratas-s-a-u/"
      },
      {
        "name": "SEÑALIZACIONES VILLAR, S.A.",
        "url": "https://assay-systems.com/register/es/senalizaciones-villar-s-a/"
      },
      {
        "name": "SERVEO SERVICIOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/serveo-servicios-s-a-u/"
      },
      {
        "name": "Tuberías y Válvulas del Sur, SL",
        "url": "https://assay-systems.com/register/es/tuberias-y-valvulas-del-sur-sl/"
      },
      {
        "name": "VIALES Y OBRAS PÚBLICAS, S.A.",
        "url": "https://assay-systems.com/register/es/viales-y-obras-publicas-s-a/"
      },
      {
        "name": "VILOR INFRAESTRUCTURAS, S.L.",
        "url": "https://assay-systems.com/register/es/vilor-infraestructuras-s-l/"
      },
      {
        "name": "ACCIONA CONSTRUCCION SA",
        "url": "https://assay-systems.com/register/es/acciona-construccion-sa/"
      },
      {
        "name": "ACEINSA MOVILIDAD, S.A.",
        "url": "https://assay-systems.com/register/es/aceinsa-movilidad-s-a/"
      },
      {
        "name": "ASFALTOS VICALVARO S.L.",
        "url": "https://assay-systems.com/register/es/asfaltos-vicalvaro-s-l/"
      },
      {
        "name": "COARSA, S.A.",
        "url": "https://assay-systems.com/register/es/coarsa-s-a/"
      },
      {
        "name": "CONSERVACIÓN, ASFALTO Y CONSTRUCCIÓN S.A.",
        "url": "https://assay-systems.com/register/es/conservacion-asfalto-y-construccion-s-a/"
      },
      {
        "name": "CONSERVACIÓN, ASFALTO Y CONSTRUCCIÓN S.A.U.",
        "url": "https://assay-systems.com/register/es/conservacion-asfalto-y-construccion-s-a-u/"
      },
      {
        "name": "ENCLAVAMIENTOS Y SEÑALIZACIÓN FERROVIARIA ENYSE, S.A.U.",
        "url": "https://assay-systems.com/register/es/enclavamientos-y-senalizacion-ferroviaria-enyse-s-a-u/"
      },
      {
        "name": "FCC Aqualia, S.A.",
        "url": "https://assay-systems.com/register/es/fcc-aqualia-s-a/"
      },
      {
        "name": "FERROVIAL CONSTRUCCION, S.A., CONSTRUCCIONES MARIEZCURRENA, S.L. y CYCASA CANTERAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/ferrovial-construccion-s-a-construcciones-mariezcurrena-s-l-y-cycasa-canteras-y-construcciones-s-a/"
      },
      {
        "name": "GRUPO BERTOLIN, SAU",
        "url": "https://assay-systems.com/register/es/grupo-bertolin-sau/"
      },
      {
        "name": "GUAMAR S.A.",
        "url": "https://assay-systems.com/register/es/guamar-s-a/"
      },
      {
        "name": "OCIDE CONSTRUCCION S.A.",
        "url": "https://assay-systems.com/register/es/ocide-construccion-s-a/"
      },
      {
        "name": "ORTIZ CONSTRUCCIONES Y PROYECTOS SA",
        "url": "https://assay-systems.com/register/es/ortiz-construcciones-y-proyectos-sa/"
      },
      {
        "name": "UTE VIUDA - LURPELAN - GAIMAZ - CANTABRICAS",
        "url": "https://assay-systems.com/register/es/ute-viuda-lurpelan-gaimaz-cantabricas/"
      },
      {
        "name": "ALSTOM TRANSPORTE S.A.",
        "url": "https://assay-systems.com/register/es/alstom-transporte-s-a/"
      },
      {
        "name": "ALUMINIOS Y FERRALLAS GARDEL SL",
        "url": "https://assay-systems.com/register/es/aluminios-y-ferrallas-gardel-sl/"
      },
      {
        "name": "ARPO EMPRESA CONSTRUCTORA, S.A.",
        "url": "https://assay-systems.com/register/es/arpo-empresa-constructora-s-a/"
      },
      {
        "name": "AZVI, S.A.U.",
        "url": "https://assay-systems.com/register/es/azvi-s-a-u/"
      },
      {
        "name": "CAF SIGNALLING, S.L.",
        "url": "https://assay-systems.com/register/es/caf-signalling-s-l/"
      },
      {
        "name": "CLECE FS SA",
        "url": "https://assay-systems.com/register/es/clece-fs-sa/"
      },
      {
        "name": "Construcciones Fertres SL",
        "url": "https://assay-systems.com/register/es/construcciones-fertres-sl/"
      },
      {
        "name": "CONSTRUCCIONES PAVON, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-pavon-s-a/"
      },
      {
        "name": "CONSTRUCCIONES Y OBRAS LLORENTE, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-y-obras-llorente-s-a-u/"
      },
      {
        "name": "COPCISA SA",
        "url": "https://assay-systems.com/register/es/copcisa-sa/"
      },
      {
        "name": "CYCASA, CANTERAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/cycasa-canteras-y-construcciones-s-a/"
      },
      {
        "name": "ECOASFALT, .S.A",
        "url": "https://assay-systems.com/register/es/ecoasfalt-s-a/"
      },
      {
        "name": "ELECNOR SEGURIDAD S.L.",
        "url": "https://assay-systems.com/register/es/elecnor-seguridad-s-l/"
      },
      {
        "name": "ELECNOR SERVICIOS Y PROYECTOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/elecnor-servicios-y-proyectos-s-a-u/"
      },
      {
        "name": "FCC CONSTRUCCIÓN, SA",
        "url": "https://assay-systems.com/register/es/fcc-construccion-sa/"
      },
      {
        "name": "MATIAS ARROM BIBILONI, S.L.",
        "url": "https://assay-systems.com/register/es/matias-arrom-bibiloni-s-l/"
      },
      {
        "name": "MEZCLAS BITUMINOSAS S.A",
        "url": "https://assay-systems.com/register/es/mezclas-bituminosas-s-a/"
      },
      {
        "name": "PAVASUR 1, S.L.",
        "url": "https://assay-systems.com/register/es/pavasur-1-s-l/"
      },
      {
        "name": "ROVER RAIL, S.A.",
        "url": "https://assay-systems.com/register/es/rover-rail-s-a/"
      },
      {
        "name": "S.A. AGRICULTORES DE LA VEGA DE VALENCIA",
        "url": "https://assay-systems.com/register/es/s-a-agricultores-de-la-vega-de-valencia/"
      },
      {
        "name": "SACYR CONSTRUCCIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/sacyr-construccion-s-a/"
      },
      {
        "name": "S.A. DE OBRAS Y SERVICIOS, COPASA",
        "url": "https://assay-systems.com/register/es/s-a-de-obras-y-servicios-copasa/"
      },
      {
        "name": "TECNOLOGIA DE FIRMES, S.A.",
        "url": "https://assay-systems.com/register/es/tecnologia-de-firmes-s-a/"
      },
      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS, S.A.-CYCASA CANTERAS Y CONSTRUCCIONES, S.A.",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-s-a-cycasa-canteras-y-construcciones-s-a/"
      },
      {
        "name": "VIAS Y CONSTRUCCIONES SA",
        "url": "https://assay-systems.com/register/es/vias-y-construcciones-sa/"
      },
      {
        "name": "VIUDA DE SAINZ, S.L.",
        "url": "https://assay-systems.com/register/es/viuda-de-sainz-s-l/"
      },
      {
        "name": "VOLTES CONNECTA, SLU",
        "url": "https://assay-systems.com/register/es/voltes-connecta-slu/"
      },
      {
        "name": "ACEDO HERMANOS, S.L.",
        "url": "https://assay-systems.com/register/es/acedo-hermanos-s-l/"
      },
      {
        "name": "ALMACENES BREKO, S.L",
        "url": "https://assay-systems.com/register/es/almacenes-breko-s-l/"
      },
      {
        "name": "ALSTOM TRANSPORTE, SA.",
        "url": "https://assay-systems.com/register/es/alstom-transporte-sa/"
      },
      {
        "name": "AQUAMBIENTE, SERVICIOS PARA EL SECTOR DEL AGUA, SAU",
        "url": "https://assay-systems.com/register/es/aquambiente-servicios-para-el-sector-del-agua-sau/"
      },
      {
        "name": "AQUATEC, PROYECTOS PARA EL SECTOR DEL AGUA, S.A.U.",
        "url": "https://assay-systems.com/register/es/aquatec-proyectos-para-el-sector-del-agua-s-a-u/"
      },
      {
        "name": "ARNÓ INFRAESTRUCTURAS, SLU",
        "url": "https://assay-systems.com/register/es/arno-infraestructuras-slu/"
      },
      {
        "name": "ASFALTOS Y PAVIMENTOS, S.A.",
        "url": "https://assay-systems.com/register/es/asfaltos-y-pavimentos-s-a/"
      },
      {
        "name": "CANTERAS DE ALMARGEN, S.L.",
        "url": "https://assay-systems.com/register/es/canteras-de-almargen-s-l/"
      },
      {
        "name": "Coalvi, S. A.",
        "url": "https://assay-systems.com/register/es/coalvi-s-a/"
      },
      {
        "name": "COBRA INSTALACIONES Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/cobra-instalaciones-y-servicios-s-a/"
      },
      {
        "name": "COBRA INSTALACIONES Y SERVICIOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/cobra-instalaciones-y-servicios-s-a-u/"
      },
      {
        "name": "COMPAÑÍA DE OBRAS PUBLICAS, HORMIGONES Y ASFALTOS, S.L.U.",
        "url": "https://assay-systems.com/register/es/compania-de-obras-publicas-hormigones-y-asfaltos-s-l-u/"
      },
      {
        "name": "COMSA, S.A.U. - NORTÚNEL, S.A.",
        "url": "https://assay-systems.com/register/es/comsa-s-a-u-nortunel-s-a/"
      },
      {
        "name": "CONSTRUCCIONES FHIMASA, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-fhimasa-s-a/"
      },
      {
        "name": "CONSTRUCCIONES RUBAU, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-rubau-s-a/"
      },
      {
        "name": "CONSTRUCCIONES SÁNCHEZ DOMÍNGUEZ-SANDO, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-sanchez-dominguez-sando-s-a-u/"
      },
      {
        "name": "CONTRATAS Y OBRAS SAN GREGORIO S.A.",
        "url": "https://assay-systems.com/register/es/contratas-y-obras-san-gregorio-s-a/"
      },
      {
        "name": "Contratas y Ventas SAU",
        "url": "https://assay-systems.com/register/es/contratas-y-ventas-sau/"
      },
      {
        "name": "CONTRATAS Y VENTAS, S.A.U.",
        "url": "https://assay-systems.com/register/es/contratas-y-ventas-s-a-u/"
      },
      {
        "name": "COPISA CONSTRUCTORA PIRENAICA, S.A.U.",
        "url": "https://assay-systems.com/register/es/copisa-constructora-pirenaica-s-a-u/"
      },
      {
        "name": "Elsamex Gestión de Infraestructuras, S.L.",
        "url": "https://assay-systems.com/register/es/elsamex-gestion-de-infraestructuras-s-l/"
      },
      {
        "name": "EXCAVACIONES Y MONTAJES VIGUERAS",
        "url": "https://assay-systems.com/register/es/excavaciones-y-montajes-vigueras/"
      },
      {
        "name": "EXTRACO, S.A.",
        "url": "https://assay-systems.com/register/es/extraco-s-a/"
      },
      {
        "name": "Global Omnium Medioambiente. S.L.",
        "url": "https://assay-systems.com/register/es/global-omnium-medioambiente-s-l/"
      },
      {
        "name": "GOSADEX SL",
        "url": "https://assay-systems.com/register/es/gosadex-sl/"
      },
      {
        "name": "GUEROLA INFRAESTRUCTURAS S.L.U.",
        "url": "https://assay-systems.com/register/es/guerola-infraestructuras-s-l-u/"
      },
      {
        "name": "HITACHI RAIL GTS SPAIN S.A.",
        "url": "https://assay-systems.com/register/es/hitachi-rail-gts-spain-s-a/"
      },
      {
        "name": "HORMIGONES INSULARES, S.L.",
        "url": "https://assay-systems.com/register/es/hormigones-insulares-s-l/"
      },
      {
        "name": "HORMIGONES SANTAELLA S.L.",
        "url": "https://assay-systems.com/register/es/hormigones-santaella-s-l/"
      },
      {
        "name": "INFRAESTRUCTURAS Y SERVICIOS SERVITRIA, S.A.",
        "url": "https://assay-systems.com/register/es/infraestructuras-y-servicios-servitria-s-a/"
      },
      {
        "name": "MARTIN HOLGADO OBRA CIVIL SL",
        "url": "https://assay-systems.com/register/es/martin-holgado-obra-civil-sl/"
      },
      {
        "name": "MEDITERRÁNEO DE OBRAS Y ASFALTOS S.A.",
        "url": "https://assay-systems.com/register/es/mediterraneo-de-obras-y-asfaltos-s-a/"
      },
      {
        "name": "OBRAS Y SERVICIOS PUBLICOS, S.A.",
        "url": "https://assay-systems.com/register/es/obras-y-servicios-publicos-s-a/"
      },
      {
        "name": "PAPSA INFRAESTRUCTURAS, S.A.",
        "url": "https://assay-systems.com/register/es/papsa-infraestructuras-s-a/"
      },
      {
        "name": "PAVASAL EMPRESA CONSTRUCTORA SA",
        "url": "https://assay-systems.com/register/es/pavasal-empresa-constructora-sa/"
      },
      {
        "name": "PROSEÑAL, S.L.U.",
        "url": "https://assay-systems.com/register/es/prosenal-s-l-u/"
      },
      {
        "name": "PROYME INGENIERIA Y CONSTRUCCION S.L.",
        "url": "https://assay-systems.com/register/es/proyme-ingenieria-y-construccion-s-l/"
      },
      {
        "name": "RODISUR JURALCA S.L.",
        "url": "https://assay-systems.com/register/es/rodisur-juralca-s-l/"
      },
      {
        "name": "ROVER INFRAESTRUCTURAS, S.A.",
        "url": "https://assay-systems.com/register/es/rover-infraestructuras-s-a/"
      },
      {
        "name": "Rover Rail SA",
        "url": "https://assay-systems.com/register/es/rover-rail-sa/"
      },
      {
        "name": "SACYR CONSERVACIÓN, S.A.",
        "url": "https://assay-systems.com/register/es/sacyr-conservacion-s-a/"
      },
      {
        "name": "SEGURIDAD INTEGRAL SECOEX, S.A.",
        "url": "https://assay-systems.com/register/es/seguridad-integral-secoex-s-a/"
      },
      {
        "name": "Señalizaciones Trillo S.L.",
        "url": "https://assay-systems.com/register/es/senalizaciones-trillo-s-l/"
      },
      {
        "name": "SOCIEDAD ANONIMA TRABAJOS Y OBRAS Unipersonal",
        "url": "https://assay-systems.com/register/es/sociedad-anonima-trabajos-y-obras-unipersonal/"
      },
      {
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        "url": "https://assay-systems.com/register/es/canastell-urbana-sl/"
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        "url": "https://assay-systems.com/register/es/casa-dels-ocells-sl/"
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        "url": "https://assay-systems.com/register/es/caservi-mantenimientos-generales-sl/"
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        "url": "https://assay-systems.com/register/es/cerma-y-arriaxa-s-l/"
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        "name": "CERRAMIENTOS Y PREFABRICADOS DEL NORTE, S.A.",
        "url": "https://assay-systems.com/register/es/cerramientos-y-prefabricados-del-norte-s-a/"
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        "url": "https://assay-systems.com/register/es/cesar-collado-herrero-cristaleria-san-nicasio/"
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        "url": "https://assay-systems.com/register/es/cgs-movilidad-s-l/"
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        "url": "https://assay-systems.com/register/es/chemtrol-division-teatro-s-a/"
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        "url": "https://assay-systems.com/register/es/chm-obras-e-infraestructuras-sa-albaida-infraestructuras-s-a/"
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        "url": "https://assay-systems.com/register/es/chm-obras-e-infraestructuras-sa-etosa-obras-y-servicios-building-s-l-u/"
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        "url": "https://assay-systems.com/register/es/cinnia-tech-s-l-u/"
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        "url": "https://assay-systems.com/register/es/civis-global-s-l-u-y-excarbi-s-l-en-ute/"
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      {
        "name": "CM SALVI, SL",
        "url": "https://assay-systems.com/register/es/cm-salvi-sl/"
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        "name": "COALVI SA",
        "url": "https://assay-systems.com/register/es/coalvi-sa/"
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        "name": "COALVI-ACISA",
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        "url": "https://assay-systems.com/register/es/coalvi-s-a-y-levantina-ingenieria-y-construccion-s-l-union-temporal-de-empresas-ley-18-1982-de-26-de-mayo-abreviadamente-ute-fgv-benidorm/"
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      {
        "name": "COMPAÑÍA LEVANTINA DE EDIFICACIÓN Y OBRA PÚBLICA SA CLEOP",
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        "name": "COMPANYIA GENERAL D'AIGÜES DE CATALUNYA, S.A. - PROEMISA S.L.",
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        "name": "COMSA INSTALACIONES Y SISTEMAS INDUSTRIALES SA",
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        "url": "https://assay-systems.com/register/es/construcciones-e-c-casas-s-l/"
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        "name": "CONSTRUCCIONES, EXCAVACIONES Y ASFALTOS, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-excavaciones-y-asfaltos-s-a/"
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        "name": "CONSTRUCCIONES FEDERICO GARCIA S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-federico-garcia-s-l/"
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        "name": "CONSTRUCCIONES FINDESA S.L",
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        "url": "https://assay-systems.com/register/es/construcciones-garrucho-s-a/"
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        "name": "Construcciones GESDESBUR S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-gesdesbur-s-l/"
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        "url": "https://assay-systems.com/register/es/construcciones-gismero-s-a-u/"
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        "name": "CONSTRUCCIONES HERMANOS ESPIN SL",
        "url": "https://assay-systems.com/register/es/construcciones-hermanos-espin-sl/"
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        "url": "https://assay-systems.com/register/es/construcciones-instalacion-y-traccion-s-a-u/"
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      {
        "name": "CONSTRUCCIONES MOYUA, S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-moyua-s-l/"
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        "name": "CONSTRUCCIONES NILA, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-nila-s-a/"
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      {
        "name": "CONSTRUCCIONES OBRAS Y VIALES S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-obras-y-viales-s-a/"
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        "name": "CONSTRUCCIONES PEREZ JIMENEZ S.L",
        "url": "https://assay-systems.com/register/es/construcciones-perez-jimenez-s-l/"
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        "name": "CONSTRUCCIONES RAFAEL ZARZOSO S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-rafael-zarzoso-s-l/"
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        "name": "Construcciones Rodriguez Lujan SL",
        "url": "https://assay-systems.com/register/es/construcciones-rodriguez-lujan-sl/"
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        "name": "CONSTRUCCIONES RUBAU, S.A. - JOSÉ ANTONIO ROMERO POLO, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-rubau-s-a-jose-antonio-romero-polo-s-a-u/"
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      {
        "name": "CONSTRUCCIONES SABINA 2014, S.L.U. Y EL SILBO CONTRUCCIOINES Y OBRAS S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-sabina-2014-s-l-u-y-el-silbo-contruccioines-y-obras-s-l/"
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      {
        "name": "CONSTRUCCIONES SÁNCHEZ DOMÍNGUEZ-SANDO, S.A.U. - ALTHENIA, S.L.U. - CONSERVACIÓN, ASFALTO Y CONSTRUCCIÓN, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-sanchez-dominguez-sando-s-a-u-althenia-s-l-u-conservacion-asfalto-y-construccion-s-a-u/"
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      {
        "name": "Construcciones Sarrion-Sarrion Concesiones-Cyopsa Sisocia-Hormigones Grañen",
        "url": "https://assay-systems.com/register/es/construcciones-sarrion-sarrion-concesiones-cyopsa-sisocia-hormigones-granen/"
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      {
        "name": "CONSTRUCCIONES SARRION S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-sarrion-s-l/"
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        "name": "Construcciones Sevilla Nevado, S. A.",
        "url": "https://assay-systems.com/register/es/construcciones-sevilla-nevado-s-a/"
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      {
        "name": "CONSTRUCCIONES SEVILLA NEVADO S.A.- AQUAMBIENTE, Servicios para el Sector del Agua, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-sevilla-nevado-s-a-aquambiente-servicios-para-el-sector-del-agua-s-a-u/"
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      {
        "name": "Construcciones y Desmontes Ribera Navarra, S.A.",
        "url": "https://assay-systems.com/register/es/construcciones-y-desmontes-ribera-navarra-s-a/"
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      {
        "name": "CONSTRUCCIONES Y OBRAS LLORENTE-PAVASAL EMPRESA CONSTRUCTORA",
        "url": "https://assay-systems.com/register/es/construcciones-y-obras-llorente-pavasal-empresa-constructora/"
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        "name": "CONSTRUCCIONES Y OBRAS TABOADA RAMOS, S.L.U",
        "url": "https://assay-systems.com/register/es/construcciones-y-obras-taboada-ramos-s-l-u/"
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        "name": "CONSTRUCCIONES Y OBRAS VALBUENA, S.A.U.",
        "url": "https://assay-systems.com/register/es/construcciones-y-obras-valbuena-s-a-u/"
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        "name": "CONSTRUCCIONES Y OBRAS VEROSA S.L.",
        "url": "https://assay-systems.com/register/es/construcciones-y-obras-verosa-s-l/"
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        "name": "Construcciones y Obras Verosa, S.L.U",
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        "name": "CONSTRUCCION INTEGRAL TESMA, S.A.",
        "url": "https://assay-systems.com/register/es/construccion-integral-tesma-s-a/"
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        "name": "CONSTRUCCIONS, ÀRIDS I FORMIGONS, SA",
        "url": "https://assay-systems.com/register/es/construccions-arids-i-formigons-sa/"
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        "name": "CONSTRUCTORA HERMANOS QUINTANA BOLAÑOS S.L.L.",
        "url": "https://assay-systems.com/register/es/constructora-hermanos-quintana-bolanos-s-l-l/"
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        "name": "CONSTRUCTORA OBRAS PUBLICAS SAN EMETERIO SA Y METALIZARD",
        "url": "https://assay-systems.com/register/es/constructora-obras-publicas-san-emeterio-sa-y-metalizard/"
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      {
        "name": "CONSTRUCTORA PEACHE, S.A.",
        "url": "https://assay-systems.com/register/es/constructora-peache-s-a/"
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        "name": "CONSTRUCTORA SAN JOSE - ACEINSA MOVILIDAD",
        "url": "https://assay-systems.com/register/es/constructora-san-jose-aceinsa-movilidad/"
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        "name": "CONSTRURED OBRAS Y SERVICIOS, S.A.",
        "url": "https://assay-systems.com/register/es/construred-obras-y-servicios-s-a/"
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        "name": "Consultora de Riegos, S.A.",
        "url": "https://assay-systems.com/register/es/consultora-de-riegos-s-a/"
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        "name": "CONTRATAS Y MOVIMIENTOS DE TIERRAS CARMIN, S.L.",
        "url": "https://assay-systems.com/register/es/contratas-y-movimientos-de-tierras-carmin-s-l/"
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      {
        "name": "CONTRATAS Y OBRAS SAN GREGORIO S.A.-AVIVA OBRAS INTEGRALES SL",
        "url": "https://assay-systems.com/register/es/contratas-y-obras-san-gregorio-s-a-aviva-obras-integrales-sl/"
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        "name": "CONTRATAS Y SERVICIOS FERROVIARIOS, S.A.",
        "url": "https://assay-systems.com/register/es/contratas-y-servicios-ferroviarios-s-a/"
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      {
        "name": "COPASA INFRAESTRUCTURAS, S.L.U.",
        "url": "https://assay-systems.com/register/es/copasa-infraestructuras-s-l-u/"
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      {
        "name": "COPASA-VIUDA",
        "url": "https://assay-systems.com/register/es/copasa-viuda/"
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        "url": "https://assay-systems.com/register/es/copcisa-sa-copisa-constructora-pirenaica-sa-fcc-construccion-sa-ferrovial-construccion-sa-obrascon/"
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      {
        "name": "Copcisa, SA & Sacyr Construcción, SA",
        "url": "https://assay-systems.com/register/es/copcisa-sa-sacyr-construccion-sa/"
      },
      {
        "name": "COPCISA, S.A. y VIALOBRA, S.L. UNION TEMPORAL DE EMPRESAS LEY 18/1982 DE 26 DE MAYO, abreviadamente UTE TUNEL LINEA 3",
        "url": "https://assay-systems.com/register/es/copcisa-s-a-y-vialobra-s-l-union-temporal-de-empresas-ley-18-1982-de-26-de-mayo-abreviadamente-ute-tunel-linea-3/"
      },
      {
        "name": "Copisa Constructora Pirenaica, SA",
        "url": "https://assay-systems.com/register/es/copisa-constructora-pirenaica-sa/"
      },
      {
        "name": "COPISA CONSTRUCTORA PIRENAICA, S.A.U./ HERRERO TEMIÑO S.A.",
        "url": "https://assay-systems.com/register/es/copisa-constructora-pirenaica-s-a-u-herrero-temino-s-a/"
      },
      {
        "name": "CORPI GESTIO INTEGRAL DE L'AIGUA, SL",
        "url": "https://assay-systems.com/register/es/corpi-gestio-integral-de-l-aigua-sl/"
      },
      {
        "name": "COUTEX EQUIPOS Y PROYECTOS, S.A.U.",
        "url": "https://assay-systems.com/register/es/coutex-equipos-y-proyectos-s-a-u/"
      },
      {
        "name": "COX WATER S.L.U. Y VOPI 4, S.A., UNIÓN TEMPORAL DE EMPRESAS",
        "url": "https://assay-systems.com/register/es/cox-water-s-l-u-y-vopi-4-s-a-union-temporal-de-empresas/"
      },
      {
        "name": "CRC Obras y Servicios, SL & Ingeniería y Servicios Ferroviarios, SA",
        "url": "https://assay-systems.com/register/es/crc-obras-y-servicios-sl-ingenieria-y-servicios-ferroviarios-sa/"
      },
      {
        "name": "CRC OBRAS Y SERVICIOS, S.L.",
        "url": "https://assay-systems.com/register/es/crc-obras-y-servicios-s-l/"
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      {
        "name": "CRISOL OBRAS Y SERVICIOS, S.L.",
        "url": "https://assay-systems.com/register/es/crisol-obras-y-servicios-s-l/"
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      {
        "name": "CROBISER OBRES I SERVEIS, SL",
        "url": "https://assay-systems.com/register/es/crobiser-obres-i-serveis-sl/"
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      {
        "name": "CS ALVAC, S.A. - CONSTRUCCIONES Y EXCAVACIONES LECHA, S.L.-- MERIDIAM EUROPE IV A SAS -LOTE 10",
        "url": "https://assay-systems.com/register/es/cs-alvac-s-a-construcciones-y-excavaciones-lecha-s-l-meridiam-europe-iv-a-sas-lote-10/"
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      {
        "name": "CUERVA ENERGÍA S.L.U",
        "url": "https://assay-systems.com/register/es/cuerva-energia-s-l-u/"
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      {
        "name": "CYOPSA-SISOCIA, S.A. + CONCESIONES SARRION, S.L. + EMIPESA, S.A.",
        "url": "https://assay-systems.com/register/es/cyopsa-sisocia-s-a-concesiones-sarrion-s-l-emipesa-s-a/"
      },
      {
        "name": "CYRESPA ARQUITECTÓNICO, S.L.",
        "url": "https://assay-systems.com/register/es/cyrespa-arquitectonico-s-l/"
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      {
        "name": "Cyros Construcción Sostenible, S.L.",
        "url": "https://assay-systems.com/register/es/cyros-construccion-sostenible-s-l/"
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      {
        "name": "DECOREFORMAS GUTIERREZ S.L",
        "url": "https://assay-systems.com/register/es/decoreformas-gutierrez-s-l/"
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        "name": "DEMAIN OBRAS Y SERVICIOS, S.L.",
        "url": "https://assay-systems.com/register/es/demain-obras-y-servicios-s-l/"
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        "name": "DESARROLLOS E INICIATIVAS CANARIAS, S.L.",
        "url": "https://assay-systems.com/register/es/desarrollos-e-iniciativas-canarias-s-l/"
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        "url": "https://assay-systems.com/register/es/gonzalez-soto-s-a/"
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        "url": "https://assay-systems.com/register/es/grulop-21-s-l/"
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        "url": "https://assay-systems.com/register/es/grupmas-constructors-slu-y-excavacions-vila-vila-sa-union-temporal-de-empresas/"
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        "url": "https://assay-systems.com/register/es/grupo-camaleon-creativos-s-l/"
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        "url": "https://assay-systems.com/register/es/grupo-render-s-l-asch-s-a/"
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        "url": "https://assay-systems.com/register/es/heliopol-s-a-u/"
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        "url": "https://assay-systems.com/register/es/i-de-redes-electricas-inteligentes-s-a-u/"
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        "url": "https://assay-systems.com/register/es/iluminaciones-ximenez-s-a-u/"
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        "url": "https://assay-systems.com/register/es/imanox-levante-s-l/"
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        "url": "https://assay-systems.com/register/es/imathia-construccion-s-l/"
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        "name": "INNOVACIONES TECNOLÓGICAS DEL SUR, S.L.",
        "url": "https://assay-systems.com/register/es/innovaciones-tecnologicas-del-sur-s-l/"
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        "name": "Innovación y Obras de Seguridad Vial, SL",
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        "name": "Jardineria Arce S.L.",
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        "name": "LYNTIA NETWORKS SAU",
        "url": "https://assay-systems.com/register/es/lyntia-networks-sau/"
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        "name": "MAETEL INSTALACIONES Y SERVICIOS INDUSTRIALES, S.A.",
        "url": "https://assay-systems.com/register/es/maetel-instalaciones-y-servicios-industriales-s-a/"
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        "name": "Mª ISABEL SÁNCHEZ DOBLADO",
        "url": "https://assay-systems.com/register/es/ma-isabel-sanchez-doblado/"
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      {
        "name": "MALLA S.A.",
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        "url": "https://assay-systems.com/register/es/mantenimiento-de-estaciones-s-l/"
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        "url": "https://assay-systems.com/register/es/mantenimiento-de-infraestructuras-s-a/"
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        "name": "UTE ACSA, OBRAS E INFRAESTRUCTURAS, S.A.U. - URBALMONTE, S.C.",
        "url": "https://assay-systems.com/register/es/ute-acsa-obras-e-infraestructuras-s-a-u-urbalmonte-s-c/"
      },
      {
        "name": "UTE ACTUACIONES LÍNEA SAGUNTO – TERUEL",
        "url": "https://assay-systems.com/register/es/ute-actuaciones-linea-sagunto-teruel/"
      },
      {
        "name": "UTE AGRUPACION GUINOVART OBRAS Y SERVICIOS HISPANIA, S.A. - AZVI S.A.U. - CONTRATAS Y VENTAS S.A.UNIPERSONAL - SACYR FERROVIARIAS S.A.",
        "url": "https://assay-systems.com/register/es/ute-agrupacion-guinovart-obras-y-servicios-hispania-s-a-azvi-s-a-u-contratas-y-ventas-s-a-unipersonal-sacyr-ferroviarias-s-a/"
      },
      {
        "name": "UTE Aguilar Viales y obras - Moelmo",
        "url": "https://assay-systems.com/register/es/ute-aguilar-viales-y-obras-moelmo/"
      },
      {
        "name": "UTE ALERO - GC",
        "url": "https://assay-systems.com/register/es/ute-alero-gc/"
      },
      {
        "name": "UTE ALIMENTACIÓN L-6 MM",
        "url": "https://assay-systems.com/register/es/ute-alimentacion-l-6-mm/"
      },
      {
        "name": "UTE ALSTOM INTEL CÁCERES – VALENCIA DE ALCÁNTARA",
        "url": "https://assay-systems.com/register/es/ute-alstom-intel-caceres-valencia-de-alcantara/"
      },
      {
        "name": "UTE ALSTOM INTEL CÓRDOBA – LORA DEL RÍO",
        "url": "https://assay-systems.com/register/es/ute-alstom-intel-penalajo-espeluy/"
      },
      {
        "name": "UTE ALSTOM INTEL VALCHILLÓN",
        "url": "https://assay-systems.com/register/es/ute-alstom-intel-valchillon/"
      },
      {
        "name": "UTE ALSTOM INTEL VILASECA",
        "url": "https://assay-systems.com/register/es/ute-alstom-intel-vilaseca/"
      },
      {
        "name": "UTE ALTUNA Y URIA - AMENABAR",
        "url": "https://assay-systems.com/register/es/ute-altuna-y-uria-amenabar/"
      },
      {
        "name": "UTE ALTUNA Y URIA -TUNELAN - URBYCOLAN",
        "url": "https://assay-systems.com/register/es/ute-altuna-y-uria-tunelan-urbycolan/"
      },
      {
        "name": "UTE AMENABAR-TECSA",
        "url": "https://assay-systems.com/register/es/ute-amenabar-tecsa/"
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      {
        "name": "UTE AMENABAR - ZUBIEDER - MARIEZCURRENA",
        "url": "https://assay-systems.com/register/es/ute-amenabar-zubieder-mariezcurrena/"
      },
      {
        "name": "UTE AMETEL-MONELEG MULTISERVICIO CADIZ 2026-32",
        "url": "https://assay-systems.com/register/es/ute-lymet-mv-multiservicio-endesa-2026-32/"
      },
      {
        "name": "UTE AMPLIACIÓN APARTADERO MONTILLA",
        "url": "https://assay-systems.com/register/es/ute-ampliacion-apartadero-montilla/"
      },
      {
        "name": "UTE AMPLIACIÓN DE VÍAS MURIEDAS (constituida por CYCASA CANTERAS Y CONSTRUCCIONES, S.A. (60%) y SYNEOX RAIL, S.L. (40%))",
        "url": "https://assay-systems.com/register/es/ute-ampliacion-de-vias-muriedas-constituida-por-cycasa-canteras-y-construcciones-s-a-60-y-syneox-rail-s-l-40/"
      },
      {
        "name": "UTE AMPLIACION VÍAS ATOCHA",
        "url": "https://assay-systems.com/register/es/ute-ampliacion-vias-atocha/"
      },
      {
        "name": "UTE AMPLIACIÓN VÍAS ESTACIÓN AS GÁNDARAS",
        "url": "https://assay-systems.com/register/es/ute-ampliacion-vias-estacion-as-gandaras/"
      },
      {
        "name": "UTE AM SEG FERROVIARIA",
        "url": "https://assay-systems.com/register/es/ute-am-seg-ferroviaria/"
      },
      {
        "name": "UTE:ANSAREO/ALTUNA Y URIA/INELSA",
        "url": "https://assay-systems.com/register/es/ute-ansareo-altuna-y-uria-inelsa/"
      },
      {
        "name": "UTE APARTADEROS LA RODA-BOBADILLA",
        "url": "https://assay-systems.com/register/es/ute-apartaderos-la-roda-bobadilla/"
      },
      {
        "name": "UTE APARTADEROS NAVARRA",
        "url": "https://assay-systems.com/register/es/ute-apartaderos-navarra/"
      },
      {
        "name": "UTE AQUAMBIENTE -ANTONIO GOMILA",
        "url": "https://assay-systems.com/register/es/ute-aquambiente-antonio-gomila/"
      },
      {
        "name": "UTE AQUAMBIENTE-ZARZUELA",
        "url": "https://assay-systems.com/register/es/ute-aquambiente-zarzuela/"
      },
      {
        "name": "UTE ARCOS 21 ASCH BERMEOSOLO",
        "url": "https://assay-systems.com/register/es/ute-arcos-21-asch-bermeosolo/"
      },
      {
        "name": "UTE ASFALTIA-MARIEZCURRENA-ZUBIEDER",
        "url": "https://assay-systems.com/register/es/ute-asfaltia-mariezcurrena-zubieder/"
      },
      {
        "name": "UTE AUTOPISTA FERROVIARIA",
        "url": "https://assay-systems.com/register/es/ute-autopista-ferroviaria/"
      },
      {
        "name": "UTE AZVI, S.A.U. / DRAGADOS S.A./ MARTÍN CASILLAS, S.L.U.",
        "url": "https://assay-systems.com/register/es/ute-azvi-s-a-u-dragados-s-a-martin-casillas-s-l-u/"
      },
      {
        "name": "UTE BECSA, S.A./CHN, S.A.",
        "url": "https://assay-systems.com/register/es/ute-becsa-s-a-chn-s-a/"
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      {
        "name": "U.T.E. BEGÍJAR LUPIÓN",
        "url": "https://assay-systems.com/register/es/u-t-e-begijar-lupion/"
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      {
        "name": "UTE BOBADILLA - RONDA",
        "url": "https://assay-systems.com/register/es/ute-la-negrilla/"
      },
      {
        "name": "UTE BYCAM-ABANDO-FCC-INTXAUSTI BALLONTI",
        "url": "https://assay-systems.com/register/es/ute-subfluvial-ballonti/"
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      {
        "name": "UTE:BYCAM S.A/FCC CONSTRUCCION, S.A",
        "url": "https://assay-systems.com/register/es/ute-bycam-s-a-fcc-construccion-s-a/"
      },
      {
        "name": "UTE CAFMAGTEL ESPELUY",
        "url": "https://assay-systems.com/register/es/ute-cafmagtel-espeluy/"
      },
      {
        "name": "UTE CAF SIGNALLING S.L. -FCC INDUSTRIAL E INFRAESTRUCTURAS ENERGÉTICAS S.A. - REVENGA INGENIEROS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-caf-signalling-s-l-fcc-industrial-e-infraestructuras-energeticas-s-a-revenga-ingenieros-s-a/"
      },
      {
        "name": "UTE CAMPEZO - ALTUNA - OBRAS ESECIALES",
        "url": "https://assay-systems.com/register/es/ute-campezo-altuna-obras-eseciales/"
      },
      {
        "name": "UTE CAMPEZO - ALTUNA Y URIA",
        "url": "https://assay-systems.com/register/es/ute-campezo-altuna-y-uria/"
      },
      {
        "name": "UTE CERDECILLA – LOS COTOS",
        "url": "https://assay-systems.com/register/es/ute-cerdecilla-los-cotos/"
      },
      {
        "name": "UTE CIDACOS FASE I",
        "url": "https://assay-systems.com/register/es/ute-cidacos-fase-i/"
      },
      {
        "name": "UTE-CITANIAS-TESINSA",
        "url": "https://assay-systems.com/register/es/ute-citanias-tesinsa/"
      },
      {
        "name": "UTE CIVIS GLOBAL, S.L. (50%) - OBRAS PUBLICAS Y REGADIOS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-civis-global-s-l-50-obras-publicas-y-regadios-s-a/"
      },
      {
        "name": "UTE CIVIS GLOBAL, S.L.U - MANTEN SL",
        "url": "https://assay-systems.com/register/es/ute-civis-global-s-l-u-manten-sl/"
      },
      {
        "name": "UTE CIVIS GLOBAL, S.L.U - OBRA CIVIL Y EDIFICACIÓN SEGESA S.L.",
        "url": "https://assay-systems.com/register/es/ute-civis-global-s-l-u-obra-civil-y-edificacion-segesa-s-l/"
      },
      {
        "name": "UTE CÓDEC OBRAS, SERVICIOS Y PROYECTOS, S.L. & CONSTRUCCIONES RUBAU, S.A.",
        "url": "https://assay-systems.com/register/es/ute-codec-obras-servicios-y-proyectos-s-l-construcciones-rubau-s-a/"
      },
      {
        "name": "UTE COLECTOR CASTELLDEFELS",
        "url": "https://assay-systems.com/register/es/ute-colector-castelldefels/"
      },
      {
        "name": "UTE COMPAÑÍA DE OBRAS PÚBLICAS, HORMIGONES Y ASFALTOS, SLU - CONSTRUCCIONES MARIANO LÓPEZ NAVARRO, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-compania-de-obras-publicas-hormigones-y-asfaltos-slu-construcciones-mariano-lopez-navarro-s-a-u/"
      },
      {
        "name": "UTE COMSA-CYCASA-ASFALTOS URIBE RONTEGI-CRUCES",
        "url": "https://assay-systems.com/register/es/ute-comsa-cycasa-asfaltos-uribe-rontegi-cruces/"
      },
      {
        "name": "UTE COMSA-CYCASA-ENVISER",
        "url": "https://assay-systems.com/register/es/ute-comsa-cycasa-enviser/"
      },
      {
        "name": "UTE COMSA-IZA RAMAL ALDAIA",
        "url": "https://assay-systems.com/register/es/ute-comsa-iza-ramal-aldaia/"
      },
      {
        "name": "UTE COMSA, S.A.U - COMSA INSTALACIONES Y SISTEMAS INDUSTRIALES S.A.U - INMEVA INFRAESTRUCTURAS S.L",
        "url": "https://assay-systems.com/register/es/ute-comsa-s-a-u-comsa-instalaciones-y-sistemas-industriales-s-a-u-inmeva-infraestructuras-s-l/"
      },
      {
        "name": "UTE COMSA-TECSA SUKARRIETA",
        "url": "https://assay-systems.com/register/es/ute-comsa-tecsa-sukarrieta/"
      },
      {
        "name": "UTE CONEXIÓN FUENCARRAL",
        "url": "https://assay-systems.com/register/es/ute-conexion-fuencarral/"
      },
      {
        "name": "UTE CONEXIÓN MARKINA-ETXEBERRIA",
        "url": "https://assay-systems.com/register/es/ute-conexion-markina-etxeberria/"
      },
      {
        "name": "UTE CONSERVACION RIOJA ALTA",
        "url": "https://assay-systems.com/register/es/ute-rioja-baja-2025/"
      },
      {
        "name": "UTE:CONSTRUCCIONES ADOLFO SOBRINO, S.A/OBRASCON HUARTE LAIN, S.A",
        "url": "https://assay-systems.com/register/es/ute-construcciones-adolfo-sobrino-s-a-obrascon-huarte-lain-s-a/"
      },
      {
        "name": "UTE CONSTRUCCIONES HERMATINSA S.L - OBRAS HERGON S.A.U",
        "url": "https://assay-systems.com/register/es/ute-construcciones-hermatinsa-s-l-obras-hergon-s-a-u/"
      },
      {
        "name": "UTE CONSTRUCCIONES SÁNCHEZ DOMÍNGUEZ SANDO SA COMSA INSTALACIONES Y SISTEMAS INDUSTRIALES SAU COMSA SAU",
        "url": "https://assay-systems.com/register/es/ute-construcciones-sanchez-dominguez-sando-sa-comsa-instalaciones-y-sistemas-industriales-sau-comsa-sau/"
      },
      {
        "name": "UTE CONSTRUCCIONES SARRION-CYOPSA SISOCIA-HORMIGONES GRAÑEN-SARRION CONCESIONES",
        "url": "https://assay-systems.com/register/es/ute-construcciones-sarrion-cyopsa-sisocia-hormigones-granen-sarrion-concesiones/"
      },
      {
        "name": "UTE CONSTRUCCIONES URDECON, S.A. - ACSA OBRAS E INFRAESTRUCTURAS, S.A.-SORIGUE ACSA CONSERVACION DE INFRAESTRUCTURAS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-construcciones-urdecon-s-a-acsa-obras-e-infraestructuras-s-a-sorigue-acsa-conservacion-de-infraestructuras-s-a/"
      },
      {
        "name": "UTE CONSTRUCCIONES URDECON, S.A.- MANTENIMIENTO DE ESTACIONES, S.L.",
        "url": "https://assay-systems.com/register/es/ute-construcciones-urdecon-s-a-mantenimiento-de-estaciones-s-l/"
      },
      {
        "name": "UTE CONSTRUCCIONES URDECON, S.A.- SOCIEDAD ANONIMA AGRICULTORES DE LA VEGA DE VALENCIA - GESTIÓN Y TRATAMIENTOS MEDIOAMBIENTALES, S.L.",
        "url": "https://assay-systems.com/register/es/ute-construcciones-urdecon-s-a-sociedad-anonima-agricultores-de-la-vega-de-valencia-gestion-y-tratamientos-medioambientales-s-l/"
      },
      {
        "name": "UTE CONSTRUCCIONES Y OBRAS VALBUENA, S.A.U.- TRAUXIA, S.A.",
        "url": "https://assay-systems.com/register/es/ute-construcciones-y-obras-valbuena-s-a-u-trauxia-s-a/"
      },
      {
        "name": "UTE COPISA CONSTRUCTORA PIRENAICA SAU ARPO EMPRESA CONSTRUCTORA SA",
        "url": "https://assay-systems.com/register/es/ute-copisa-constructora-pirenaica-sau-arpo-empresa-constructora-sa/"
      },
      {
        "name": "UTE CORALSUR MANTENIMIENTO SL MOLIFER CONSTRUCCIONES Y JARDINES SL.",
        "url": "https://assay-systems.com/register/es/ute-coralsur-mantenimiento-sl-molifer-construcciones-y-jardines-sl/"
      },
      {
        "name": "UTE COSPLAAN OBRAS Y SERVICIOS LAANTIT, SLU - MONCOBRA, SA",
        "url": "https://assay-systems.com/register/es/ute-cosplaan-obras-y-servicios-laantit-slu-moncobra-sa/"
      },
      {
        "name": "UTE COYNSA 2000 - CONEXA",
        "url": "https://assay-systems.com/register/es/ute-coynsa-2000-conexa/"
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      {
        "name": "UTE CYCASA_AMENABAR_BYCAM_ALDAIA",
        "url": "https://assay-systems.com/register/es/ute-cycasa-amenabar-bycam-aldaia/"
      },
      {
        "name": "UTE CYCASA_COMSA_URIBE ERLETXE-BOROA",
        "url": "https://assay-systems.com/register/es/ute-cycasa-comsa-uribe-erletxe-boroa/"
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      {
        "name": "UTE CYCASA-MARIEZCURRENA-FHIMASA",
        "url": "https://assay-systems.com/register/es/ute-cycasa-mariezcurrena-fhimasa/"
      },
      {
        "name": "UTE DCC AVE LOTE 1",
        "url": "https://assay-systems.com/register/es/ute-dcc-ave-lote-1/"
      },
      {
        "name": "UTE DEPOSITO ZUMAIA IZA-COMSA",
        "url": "https://assay-systems.com/register/es/ute-deposito-zumaia-iza-comsa/"
      },
      {
        "name": "UTE DEUMAL & VIALSER",
        "url": "https://assay-systems.com/register/es/ute-deumal-vialser/"
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      {
        "name": "UTE DRAGADOS, SA - ACSA, OBRAS E INFRAESTRUCTURAS, SAU",
        "url": "https://assay-systems.com/register/es/ute-dragados-sa-acsa-obras-e-infraestructuras-sau/"
      },
      {
        "name": "UTE DRAGADOS, S.A. , AZVI, S.A. y MARTÍN CASILLAS, S.L.U",
        "url": "https://assay-systems.com/register/es/ute-dragados-s-a-azvi-s-a-y-martin-casillas-s-l-u/"
      },
      {
        "name": "UTE:DRAGADOS, S.A/OBRAS SUBTERRANEAS, S.A",
        "url": "https://assay-systems.com/register/es/ute-dragados-s-a-obras-subterraneas-s-a/"
      },
      {
        "name": "UTE DRAGADOS, S.A. (A15139314) (75%) – TECSA EMPRESA CONSTRUCTORA, S.A.",
        "url": "https://assay-systems.com/register/es/ute-dragados-s-a-a15139314-75-tecsa-empresa-constructora-s-a/"
      },
      {
        "name": "UTE EDAR CANJAYAR",
        "url": "https://assay-systems.com/register/es/ute-edar-finana/"
      },
      {
        "name": "U.T.E. ELECNOR, SERVICIOS Y PROYECTOS, S.A.U. – AUDECA, S.L.U.",
        "url": "https://assay-systems.com/register/es/u-t-e-elecnor-servicios-y-proyectos-s-a-u-audeca-s-l-u/"
      },
      {
        "name": "UTE ELECNOR SERVICIOS Y PROYECTOS, S.A.U. - ELECTREN, S.A.",
        "url": "https://assay-systems.com/register/es/ute-elecnor-servicios-y-proyectos-s-a-u-electren-s-a/"
      },
      {
        "name": "UTE ELECNOR SERVICIOS Y PROYECTOS, S.A.U. - SYNEOX RAIL, S.L.U. - ELECTREN, S.A. - TELEFONOS LINEAS Y CENTRALES S.A.",
        "url": "https://assay-systems.com/register/es/ute-elecnor-servicios-y-proyectos-s-a-u-syneox-rail-s-l-u-electren-s-a-telefonos-lineas-y-centrales-s-a/"
      },
      {
        "name": "UTE ELECNOR SERVICIOS Y PROYECTOS, S.L.U - SYNEOX RAIL, S.L.U. - ELECTREN SA - COMSA INSTALACIONES Y SISTEMAS INDUSTRIALES SA",
        "url": "https://assay-systems.com/register/es/ute-elecnor-servicios-y-proyectos-s-l-u-syneox-rail-s-l-u-electren-sa-comsa-instalaciones-y-sistemas-industriales-sa/"
      },
      {
        "name": "UTE ELECT TRANVÍA ALCALÁ GUADAÍRA",
        "url": "https://assay-systems.com/register/es/ute-sem-alcala/"
      },
      {
        "name": "UTE ELEKTRA-IKUSI",
        "url": "https://assay-systems.com/register/es/ute-elektra-ikusi/"
      },
      {
        "name": "UTE ELSAN-AGLOMERADOS LEON",
        "url": "https://assay-systems.com/register/es/ute-elsan-aglomerados-leon/"
      },
      {
        "name": "UTE ERTMS SFM CAF ELECTRANS HITACHI",
        "url": "https://assay-systems.com/register/es/ute-ertms-sfm-caf-electrans-hitachi/"
      },
      {
        "name": "UTE Espina Obras Hidráulicas, S.A.U. - Jarquil Construcción, S.A.",
        "url": "https://assay-systems.com/register/es/ute-espina-obras-hidraulicas-s-a-u-jarquil-construccion-s-a/"
      },
      {
        "name": "UTE ESTACIONES HUESCA",
        "url": "https://assay-systems.com/register/es/ute-estaciones-huesca/"
      },
      {
        "name": "UTE ESTACIONES TRANVÍA",
        "url": "https://assay-systems.com/register/es/ute-estaciones-tranvia/"
      },
      {
        "name": "UTE EX-108 MORALEJA-FRONTERA PORTUGAL",
        "url": "https://assay-systems.com/register/es/ute-ex-108-moraleja-frontera-portugal/"
      },
      {
        "name": "UTE EXBASA-TECSA-AMENABAR-DRAGADOS-OSSA",
        "url": "https://assay-systems.com/register/es/ute-exbasa-tecsa-amenabar-dragados-ossa/"
      },
      {
        "name": "UTE EYM GUINOVART S.A.U. - MONTAJES ELECTRICOS VINAELECTRIC SOCIEDAD LIMITADA",
        "url": "https://assay-systems.com/register/es/ute-eym-guinovart-s-a-u-montajes-electricos-vinaelectric-sociedad-limitada/"
      },
      {
        "name": "UTE FAIVELEY TRANSPORT IBERICA, S.A. & COMSA INSTALACIONES Y SISTEMAS INDUSTRIALES, S.A.U. & COMSA, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-faiveley-transport-iberica-s-a-comsa-instalaciones-y-sistemas-industriales-s-a-u-comsa-s-a-u/"
      },
      {
        "name": "UTE FCC Aqualia, S.A. - FCC Medioambiente, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-fcc-aqualia-s-a-fcc-medioambiente-s-a-u/"
      },
      {
        "name": "UTE FCC CONSTRUCCION, S.A. - CONTRATAS Y VENTAS, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-fcc-construccion-s-a-contratas-y-ventas-s-a-u/"
      },
      {
        "name": "UTE, FCC CONSTRUCCIÓN, S.A.-SACYR CONSTRUCCIÓN, S.A.-BECSA, S.A.",
        "url": "https://assay-systems.com/register/es/ute-fcc-construccion-s-a-sacyr-construccion-s-a-becsa-s-a/"
      },
      {
        "name": "UTE FERROVIAL ENERGÍA, S.A.U. - FCC INDUSTRIAL E INFRAESTRUCTURASS ENERGÉTICAS S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-ferrovial-energia-s-a-u-fcc-industrial-e-infraestructurass-energeticas-s-a-u/"
      },
      {
        "name": "UTE: FHIMASA/ NOVHA IO.",
        "url": "https://assay-systems.com/register/es/ute-fhimasa-novha-io/"
      },
      {
        "name": "UTE FRANCISCO GOMEZ Y CIA, S.L-MISTURAS OBRAS E PROXECTOS, S.A.-VAZQUEZ Y REINO, S.L.",
        "url": "https://assay-systems.com/register/es/ute-francisco-gomez-y-cia-s-l-misturas-obras-e-proxectos-s-a-vazquez-y-reino-s-l/"
      },
      {
        "name": "UTE FUENTES HIJAR",
        "url": "https://assay-systems.com/register/es/ute-fuentes-hijar/"
      },
      {
        "name": "UTE GC-3 LOTE 3",
        "url": "https://assay-systems.com/register/es/ute-gc-3-lote-3/"
      },
      {
        "name": "UTE GÉVORA CONSTRUCCIONES, SA - ELABORADOS METALICOS SACEDON S.L.",
        "url": "https://assay-systems.com/register/es/ute-gevora-construcciones-sa-elaborados-metalicos-sacedon-s-l/"
      },
      {
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        "name": "UTE GRULOP 21 - RUBAU",
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        "name": "UTE HERMANOS DE PABLO-RIOJANA",
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        "name": "UTE HERMANOS RUBIO GRUPO CONSTRUCTOR HERCE SLU-CONTRUCCIONES Y OBRAS VALBUENA,SAU",
        "url": "https://assay-systems.com/register/es/ute-hermanos-rubio-grupo-constructor-herce-slu-contrucciones-y-obras-valbuena-sau/"
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        "name": "UTE HITACHI RAIL GTS SPAIN, S.A.U. – SISTEMAS Y MONTAJES INDUSTRIALES, S.A.",
        "url": "https://assay-systems.com/register/es/ute-hitachi-rail-gts-spain-s-a-u-sistemas-y-montajes-industriales-s-a/"
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        "name": "UTE INFRAESTRUCTURA FORESTAL Y MEDIO AMBIENTE-COPUVER",
        "url": "https://assay-systems.com/register/es/ute-infraestructura-forestal-y-medio-ambiente-copuver/"
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      {
        "name": "UTE INFRAESTRUCTURAS DE MOVILIDAD LOTE 2",
        "url": "https://assay-systems.com/register/es/ute-movilidad-lote-1/"
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        "name": "U.T.E. ITAF VILLAPEREZ",
        "url": "https://assay-systems.com/register/es/u-t-e-itaf-villaperez/"
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        "name": "UTE JADRAQUE",
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        "name": "UTE JIMENEZ Y CARMONA SA AZOGUE INGENIERIA SL",
        "url": "https://assay-systems.com/register/es/ute-jimenez-y-carmona-sa-azogue-ingenieria-sl/"
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      {
        "name": "UTE JOCON INFRAESTRUCTURAS, S.L. - CONSTRUCCIONES PÉREZ JIMÉNEZ, S.L.",
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        "name": "U.T.E. L3 METRO DE SEVILLA SUBTRAMO III",
        "url": "https://assay-systems.com/register/es/u-t-e-l3-metro-de-sevilla-subtramo-iii/"
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      {
        "name": "UTE:LANTANIA, S.A.U/AZACETA, S.A/GEOTUNEL, S-Ñ",
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      {
        "name": "UTE LA RIOJA FASE IV RAMAL DE ALFARO",
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      {
        "name": "UTE LEZAMA",
        "url": "https://assay-systems.com/register/es/ute-lezama/"
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        "name": "UTE LÍNEA 6-LOTE 1 VIAS Y CONSTRUCCIONES, S.A. y CONTRATAS Y VENTAS, S.A.U.",
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        "name": "UTE LU-540 MISTURAS, S.A.-ISIDRO OTERO, S.L.",
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      {
        "name": "UTE LUTXANA-ALTZAGA",
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        "name": "UTE MAN-COEXA",
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        "name": "UTE MATIAS ARROM BIBILONI, S.L. - HORMIGONES ASFÁLTICOS ANDALUCES, S.A.",
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        "name": "U.T.E. Mediodía-Recoletos",
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      {
        "name": "UTE MIRANDA – LOGROÑO",
        "url": "https://assay-systems.com/register/es/ute-miranda-logrono/"
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      {
        "name": "UTE MOGENTE-ALCUDIA",
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        "name": "UTE NEMESIO ORDOÑEZ,S.A. - MOVIMIENTOS DE ÁRIDOS Y CONSTRUCCIONES DE AROSA, S.L. MARCONSA - CONSTRUCCIONES Y OBRAS TABOADA RAMOS, S.L.U.",
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      {
        "name": "UTE OBRASCON HUARTE LAIN SA - GEOCIVIL,S.A.",
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      {
        "name": "UTE OBRASCÓN HUARTE LAIN - IMESAPI, S.A.",
        "url": "https://assay-systems.com/register/es/ute-obrascon-huarte-lain-imesapi-s-a/"
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      {
        "name": "UTE OBRASCON HUARTE LAIN S.A., GUAMAR S.A. Y SOLUCIONES TECNOLOGICAS APLICADAS AL MEDIO S.L.",
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      {
        "name": "UTE: OBRAS PÚBLICAS Y REGADÍOS, S.A. - ACSA, OBRAS E INFRAESTRUCTURAS, S.A.U",
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        "name": "UTE OBRAS Y SERVICIOS TAGA, S.A. - GESTION Y EJECUCION DE OBRA CIVIL, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-obras-y-servicios-taga-s-a-gestion-y-ejecucion-de-obra-civil-s-a-u/"
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      {
        "name": "UTE ORECO BALGON, S.A.- CONSTRUCIÓNS, OBRAS E VIAIS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-oreco-balgon-s-a-construcions-obras-e-viais-s-a/"
      },
      {
        "name": "UTE ORTHEM SERVICIOS Y ACTUACIONES AMBIENTALES, SAU - COBRA INSTALACIONES Y SERVICIOS S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-orthem-servicios-y-actuaciones-ambientales-sau-cobra-instalaciones-y-servicios-s-a-u/"
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      {
        "name": "UTE ORTIZ CONSTRUCCIONES Y PROYECTOS, S.A. - ASFALTOS VICALVARO, S.L.",
        "url": "https://assay-systems.com/register/es/ute-ortiz-construcciones-y-proyectos-s-a-asfaltos-vicalvaro-s-l/"
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      {
        "name": "UTE ORTIZ CONSTRUCCIONES Y PROYECTOS, S.A. - LICUAS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-ortiz-construcciones-y-proyectos-s-a-licuas-s-a/"
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      {
        "name": "UTE PABASA-VALLES-AUGUSTA-BARCINO",
        "url": "https://assay-systems.com/register/es/ute-pabasa-valles-augusta-barcino/"
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      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS-CONELSAN -ELSAN",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-conelsan-elsan/"
      },
      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS SA - INFRAESTRUCTURAS CONELSAN SA ¿ F GOMEZ Y CIA",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-sa-infraestructuras-conelsan-sa-f-gomez-y-cia/"
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      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS, S.A.-AGLOMEX, S.A.",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-s-a-aglomex-s-a/"
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      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS, S.A.-LICUAS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-s-a-licuas-s-a/"
      },
      {
        "name": "UTE PADECASA OBRAS Y SERVICIOS SA - VIALEX CONSTRUCTORA ARAGONESA SLU - INFRAESTRUCTURAS CONELSAN SA",
        "url": "https://assay-systems.com/register/es/ute-padecasa-obras-y-servicios-sa-vialex-constructora-aragonesa-slu-infraestructuras-conelsan-sa/"
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      {
        "name": "UTE PANTALLAS EJE ESTE",
        "url": "https://assay-systems.com/register/es/ute-pantallas-eje-este/"
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      {
        "name": "UTE PAVASAL - GRUPO BERTOLIN",
        "url": "https://assay-systems.com/register/es/ute-pavasal-grupo-bertolin/"
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      {
        "name": "UTE PEDRO ABAD",
        "url": "https://assay-systems.com/register/es/ute-pedro-abad/"
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      {
        "name": "UTE PROBISA VÍAS Y OBRAS S.L.U - CONSTRUCCIONES Y OBRAS TABOADA RAMOS S.L.U.",
        "url": "https://assay-systems.com/register/es/ute-probisa-vias-y-obras-s-l-u-construcciones-y-obras-taboada-ramos-s-l-u/"
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      {
        "name": "UTE PRUNA",
        "url": "https://assay-systems.com/register/es/ute-pruna/"
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      {
        "name": "UTE PTOC-UC10",
        "url": "https://assay-systems.com/register/es/ute-ptoc-uc10/"
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      {
        "name": "UTE PUENTES Y CALZADAS INFRAESTRUCTURAS, S.L.U. (B70043104) (60%)- CONTRATAS VILOR, S.L.",
        "url": "https://assay-systems.com/register/es/ute-puentes-y-calzadas-infraestructuras-s-l-u-b70043104-60-contratas-vilor-s-l/"
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      {
        "name": "UTE PUENTES Y CALZADAS INFRAESTRUCTURAS, S.L.U.- FRANCISCO GÓMEZ Y CÍA, S.L.-VÁZQUEZ Y REINO, S.L.",
        "url": "https://assay-systems.com/register/es/ute-puentes-y-calzadas-infraestructuras-s-l-u-francisco-gomez-y-cia-s-l-vazquez-y-reino-s-l/"
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      {
        "name": "UTE REGENERACIÓN URBANA L1",
        "url": "https://assay-systems.com/register/es/ute-regeneracion-urbana-l1/"
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      {
        "name": "UTE RELLENO PUERTO DE AVILÉS",
        "url": "https://assay-systems.com/register/es/ute-relleno-puerto-de-aviles/"
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      {
        "name": "UTE RENOVACIÓN BUÑOL – UTIEL",
        "url": "https://assay-systems.com/register/es/ute-renovacion-bunol-utiel/"
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      {
        "name": "UTE RENOVACION XATIVA-ALCOI",
        "url": "https://assay-systems.com/register/es/ute-renovacion-xativa-alcoi/"
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      {
        "name": "UTE REORDENACIÓN ESTACIÓN SANTANDER",
        "url": "https://assay-systems.com/register/es/ute-reordenacion-estacion-santander/"
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      {
        "name": "UTE RESIDENCIA PER A GENT GRAN I CENTRE DE DIA MOLINS DE REI",
        "url": "https://assay-systems.com/register/es/ute-residencia-per-a-gent-gran-i-centre-de-dia-molins-de-rei/"
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      {
        "name": "UTE ROMERO POLO - EIFFAGE",
        "url": "https://assay-systems.com/register/es/ute-romero-polo-eiffage/"
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      {
        "name": "UTE RONDA NORTE CORDOBA",
        "url": "https://assay-systems.com/register/es/ute-ronda-norte-cordoba/"
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      {
        "name": "UTE RONDA SURESTE CACERES",
        "url": "https://assay-systems.com/register/es/ute-ronda-sureste-caceres/"
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      {
        "name": "UTE ROVER INFRAESTRUCTURAS, S.A., AMBLING INGENIERÍA Y SERVICIOS, S.L. y LA SERRANA DE CONSTRUCCIONES, S.L.",
        "url": "https://assay-systems.com/register/es/ute-rover-infraestructuras-s-a-ambling-ingenieria-y-servicios-s-l-y-la-serrana-de-construcciones-s-l/"
      },
      {
        "name": "UTE ROVER INFRAESTRUCTURAS, S.A., BECSA, S.A. y ROVER RAIL, S.A.",
        "url": "https://assay-systems.com/register/es/ute-rover-infraestructuras-s-a-becsa-s-a-y-rover-rail-s-a/"
      },
      {
        "name": "UTE ROVER INFRAESTRUCTURAS, S.A. y COTODISA OBRAS Y SERVICIOS, S.A., abreviadamente INFRAESTRUCTURAS MADRID LOTE 5",
        "url": "https://assay-systems.com/register/es/ute-rover-infraestructuras-s-a-y-cotodisa-obras-y-servicios-s-a-abreviadamente-infraestructuras-madrid-lote-5/"
      },
      {
        "name": "UTE SACYR AGUA. S.L. - OPS INFRAESTRUCTURAS Y SERVICIOS HIDRÁULICOS,S.L.",
        "url": "https://assay-systems.com/register/es/ute-sacyr-agua-s-l-ops-infraestructuras-y-servicios-hidraulicos-s-l/"
      },
      {
        "name": "UTE SACYR FERROVIARIAS, S.A. - LANTANIA, S.A.U.",
        "url": "https://assay-systems.com/register/es/ute-sacyr-ferroviarias-s-a-lantania-s-a-u/"
      },
      {
        "name": "UTE SAN MIGUEL ANAKA",
        "url": "https://assay-systems.com/register/es/ute-san-miguel-anaka/"
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      {
        "name": "UTE SANTA MARIA-ZARAGOZA",
        "url": "https://assay-systems.com/register/es/ute-tuneles-teruel-zaragoza-constituida-por-contratas-vilor-s-l-60-viuda-de-sainz-s-l-20-lurpelan-tunnelling-s-a-20/"
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      {
        "name": "UTE SARASATE",
        "url": "https://assay-systems.com/register/es/ute-sarasate/"
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      {
        "name": "UTE SEGURIDAD CYMI FERROCARRILES",
        "url": "https://assay-systems.com/register/es/ute-seguridad-cymi-ferrocarriles/"
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      {
        "name": "UTE SEÑALIZACIÓN POLA DE LENA OVIEDO",
        "url": "https://assay-systems.com/register/es/ute-senalizacion-pola-de-lena-oviedo/"
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        "name": "UTE SEÑALIZACION VIGO",
        "url": "https://assay-systems.com/register/es/ute-senalizacion-vigo/"
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        "name": "UTE SENSORIZACIÓN AGUAS DE BURGOS",
        "url": "https://assay-systems.com/register/es/ute-sensorizacion-aguas-de-burgos/"
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      {
        "name": "UTE SERANCO, S.A.U. - INGENIERÍA OBRAS Y TECNOLOGÍA EUROPEA, S.L. - PRODESUR CONSTRUCCIÓN Y PROYECTOS, S.L., abreviadamente UTE AM URBANIZACIÓN LOTE 3",
        "url": "https://assay-systems.com/register/es/ute-seranco-s-a-u-ingenieria-obras-y-tecnologia-europea-s-l-prodesur-construccion-y-proyectos-s-l-abreviadamente-ute-am-urbanizacion-lote-3/"
      },
      {
        "name": "UTE SERVEI MANTENIMENT AIGÜES DE TORTOSA",
        "url": "https://assay-systems.com/register/es/ute-servei-manteniment-aigues-de-tortosa/"
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      {
        "name": "UTE SETYMA GRUPO SH",
        "url": "https://assay-systems.com/register/es/ute-setyma-grupo-sh/"
      },
      {
        "name": "UTE SIEMENS RAIL AUTOMATION S.A. - FCC INDUSTRIAL E INFRAESTRUCTURAS ENERGETICAS S.A",
        "url": "https://assay-systems.com/register/es/ute-siemens-rail-automation-s-a-fcc-industrial-e-infraestructuras-energeticas-s-a/"
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      {
        "name": "UTE SIEMENS-SISTEM ALMACELLES-VILAVERD",
        "url": "https://assay-systems.com/register/es/ute-siemens-sistem-almacelles-vilaverd/"
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      {
        "name": "UTE SIEMENS-SISTEM AYERBE-CANFRANC",
        "url": "https://assay-systems.com/register/es/ute-siemens-sistem-ayerbe-canfranc/"
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      {
        "name": "UTE SIEMENS – SISTEM EMBID - ÉPILA",
        "url": "https://assay-systems.com/register/es/ute-siemens-sistem-embid-epila/"
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      {
        "name": "UTE SIEMENS-SISTEM ESTACIÓN ALCOVER",
        "url": "https://assay-systems.com/register/es/ute-siemens-sistem-estacion-alcover/"
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      {
        "name": "UTE SIEMENS – SISTEM POLA DE SIERO",
        "url": "https://assay-systems.com/register/es/ute-siemens-sistem-pola-de-siero/"
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      {
        "name": "U.T.E. Silla-Puebla Larga",
        "url": "https://assay-systems.com/register/es/u-t-e-silla-puebla-larga/"
      },
      {
        "name": "UTE SISTEMAS Y MONTAJES INDUSTRIALES S.A. - KONTRON TRANSPORTATION ESPAÑA S.L",
        "url": "https://assay-systems.com/register/es/ute-sistemas-y-montajes-industriales-s-a-kontron-transportation-espana-s-l/"
      },
      {
        "name": "UTE SISTEM – SSCH MOTORES IRÚN",
        "url": "https://assay-systems.com/register/es/ute-sistem-ssch-motores-irun/"
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      {
        "name": "UTE SOBRINO AOSA ERLETXE",
        "url": "https://assay-systems.com/register/es/ute-sobrino-aosa-erletxe/"
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      {
        "name": "UTE SOBRINO ASFALTADOS OLARRA",
        "url": "https://assay-systems.com/register/es/ute-sobrino-asfaltados-olarra/"
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      {
        "name": "UTE SOBRINO-AYU-ANSAREO",
        "url": "https://assay-systems.com/register/es/ute-sobrino-ayu-ansareo/"
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      {
        "name": "UTE SOLTEC-ALERO-GC",
        "url": "https://assay-systems.com/register/es/ute-soltec-alero-gc/"
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      {
        "name": "UTE SOLUCIONA OBRAS Y SERVICIOS S.L.U. Y LIROA INGENIERIA Y OBRAS S.L.",
        "url": "https://assay-systems.com/register/es/ute-soluciona-obras-y-servicios-s-l-u-y-liroa-ingenieria-y-obras-s-l/"
      },
      {
        "name": "UTE SORIGUE - ARNÓ INFRAESTRUCTURAS - ROMERO POLO",
        "url": "https://assay-systems.com/register/es/ute-sorigue-arno-infraestructuras-romero-polo/"
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      {
        "name": "UTE TECSA-COMSA",
        "url": "https://assay-systems.com/register/es/ute-tecsa-comsa/"
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      {
        "name": "UTE TECSA - DRAGADOS - COEXA",
        "url": "https://assay-systems.com/register/es/ute-tecsa-dragados-coexa/"
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      {
        "name": "UTE TECSA EMPRESA CONSTRUCTORA, SA- S.A. DE OBRAS Y SERV COPASA- DRAGADOS, S.A.",
        "url": "https://assay-systems.com/register/es/ute-tecsa-empresa-constructora-sa-s-a-de-obras-y-serv-copasa-dragados-s-a/"
      },
      {
        "name": "UTE TELEMANDO RAM ASTURIAS",
        "url": "https://assay-systems.com/register/es/ute-telemando-ram-asturias/"
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      {
        "name": "UTE Torrelavega-Santander",
        "url": "https://assay-systems.com/register/es/ute-torrelavega-santander/"
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      {
        "name": "UTE TRAMO CEMENTERIO DE M",
        "url": "https://assay-systems.com/register/es/ute-tramo-cementerio-de-m/"
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      {
        "name": "UTE TRAMVIA GRAN VIA",
        "url": "https://assay-systems.com/register/es/ute-tramvia-gran-via/"
      },
      {
        "name": "UTE TRAVIESAS RS POR MONOBLOQUE SELGUA-LLEIDA",
        "url": "https://assay-systems.com/register/es/ute-traviesas-rs-por-monobloque-selgua-lleida/"
      },
      {
        "name": "UTE URBANIZACIÓN APR 16-04 DE HORTALEZA",
        "url": "https://assay-systems.com/register/es/ute-urbanizacion-apr-16-04-de-hortaleza/"
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      {
        "name": "UTE URDINBERRI - LURPELAN - TESINSA",
        "url": "https://assay-systems.com/register/es/ute-urdinberri-lurpelan-tesinsa/"
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      {
        "name": "UTE URDINBERRI - VIUDA",
        "url": "https://assay-systems.com/register/es/ute-urdinberri-viuda/"
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      {
        "name": "UTE VAINSA - SOLUCIONES TECNICAS",
        "url": "https://assay-systems.com/register/es/ute-vainsa-soluciones-tecnicas/"
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      {
        "name": "UTE VIADUCTO MARINA",
        "url": "https://assay-systems.com/register/es/ute-viaducto-marina/"
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      {
        "name": "UTE VIUDA DE SAINZ - GAIMAZ",
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        "name": "Vértice Vertical SLU",
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        "name": "Vesta Group Express SL",
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        "name": "Vilor Agua Y Medio Ambiente S.L.",
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        "name": "Xtrañas Producciones, S.L",
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      {
        "name": "Yter nexus, S.L.",
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      {
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        "url": "https://assay-systems.com/register/es/zonadecor-solutions-slu/"
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    ],
    "assay_record": "ASY-ES-0T134SO044",
    "cite_as": "Assay Systems, \"Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork: Spain public contracts since 2024\", https://assay-systems.com/register/es/line/construction-work-for-pipelines-communication-and-power-lines-for-highways-roads-airfields-and-railways-flatwork/"
  }
}