Japan · Procurement Portal award records · Supplier record

Yamamoto Seiso Co., Ltd.

株式会社山本清掃

Line: Refuse disposal and treatment (UNSPSC 76120000)Register loaded to September 2026Compiled 12 October 2026

Yamamoto Seiso Co., Ltd. — Japan · Procurement Portal award records · Supplier record: 11 award notices, all years (Mar 2023 – Mar 2026); 10 since January 2024 (2 buyers); 16th rank in the line (of 384 suppliers · 0.9%); 25 buyers never served (862 notices in the line from them).

Assay record ASY-JP-1K1NDXN0SG · Cite as: Assay Systems, “Yamamoto Seiso Co., Ltd. in the Procurement Portal register for Japan”, https://assay-systems.com/register/jp/yamamoto-seiso-co-ltd/

11
award notices, all years
Mar 2023 – Mar 2026
10
since January 2024
2 buyers
16th
rank in the line
of 384 suppliers · 0.9%
25
buyers never served
862 notices in the line from them

Own record by year

award notices, 2014 onward
1
5
2
3
2014201520162017201820192020202120222023202420252026

Who buys from Yamamoto Seiso Co., Ltd.

since January 2024
2buyers
10notices
50%top buyer
Ministry of Agriculture, Forestry and Fisheries50.0%
5 notices
Ministry of Justice50.0%
5 notices

The line

since January 2024
1,107award notices
27buyers
384suppliers
18.3%held by top ten

Refuse disposal and treatment (UNSPSC 76120000)

391
400
316
202420252026Jan–Sep
16thof 384 suppliers
10notices name Yamamoto Seiso Co., Ltd.
0.9%share of the line
2.4%of 205 notices from Ministry of Justice
12.5%of 40 notices from Ministry of Agriculture, Forestry and Fisheries
81new suppliers since 2024

Buyers that buy the line and never named Yamamoto Seiso Co., Ltd.

since April 2014
25buyers
862notices since 2024
20buyers took a new supplier
82suppliers came in that way
Ministry of the Environment
228 notices
National Tax Agency
131 notices
Ministry of Health, Labour and Welfare
100 notices
Ministry of Land, Infrastructure, Transport and Tourism
84 notices
Ministry of Defense
79 notices
Ministry of Finance
63 notices
Forestry Agency
28 notices
Public Prosecutors Office
26 notices
Ministry of Economy, Trade and Industry
23 notices
Japan Coast Guard
22 notices
National Police Agency
22 notices
Supreme Court of Japan
10 notices
Cabinet Office
8 notices
Ministry of Education, Culture, Sports, Science and Technology
8 notices
Nuclear Regulation Authority
6 notices
National Personnel Authority
4 notices
House of Councillors
3 notices
House of Representatives
3 notices
Imperial Household Agency
3 notices
Japan Fair Trade Commission
3 notices
Ministry of Foreign Affairs
3 notices
Digital Agency
2 notices
Consumer Affairs Agency
1 notice
Japan Transport Safety Board
1 notice
Ministry of Internal Affairs and Communications
1 notice

Suppliers next to it in the line

since January 2024
Nippon Kankyo Eisei Center1 buyer
10 notices
Onishi Sogyo Co., Ltd.3 buyers
10 notices
Toho Clean Co., Ltd.1 buyer
10 notices
Yamamoto Seiso Co., Ltd.
10 notices

All 384 suppliers in the line

The extract

Every buyer, every supplier, award date, notice number and value where one is disclosed, behind the figures above.

Request extract

Source: successful bid records (open data) for Japan in the Procurement Portal of the Government of Japan, Digital Agency, p-portal.go.jp, which permits reuse including commercial use under its terms of use; awards from April 2014 to 30 September 2026, accessed 12 October 2026.Assay Systems has changed the data.