Japan · Procurement Portal award records · Supplier record

Issei Co., Ltd.

株式会社一成

Line: Management advisory services (UNSPSC 80100000)Register loaded to September 2026Compiled 12 October 2026

Issei Co., Ltd. — Japan · Procurement Portal award records · Supplier record: 221 award notices, all years (Jun 2014 – Sep 2026); 76 since January 2024 (4 buyers); 40th rank in the line (of 2,380 suppliers · 0.3%); 37 buyers never served (8,744 notices in the line from them).

Assay record ASY-JP-0A4NZ151BE · Cite as: Assay Systems, “Issei Co., Ltd. in the Procurement Portal register for Japan”, https://assay-systems.com/register/jp/issei-co-ltd/

221
award notices, all years
Jun 2014 – Sep 2026
76
since January 2024
4 buyers
40th
rank in the line
of 2,380 suppliers · 0.3%
37
buyers never served
8,744 notices in the line from them

Own record by year

award notices, 2014 onward
5
14
14
13
10
11
18
17
23
20
28
24
24
2014201520162017201820192020202120222023202420252026

Who buys from Issei Co., Ltd.

since January 2024
4buyers
76notices
71%top buyer
Ministry of the Environment71.1%
54 notices
Ministry of Agriculture, Forestry and Fisheries19.7%
15 notices
Forestry Agency5.3%
4 notices
Imperial Household Agency3.9%
3 notices

The line

since January 2024
10,799award notices
41buyers
2,380suppliers
15.0%held by top ten

Management advisory services (UNSPSC 80100000)

3,817
3,843
3,139
202420252026Jan–Sep
40thof 2,380 suppliers
32notices name Issei Co., Ltd.
0.3%share of the line
1.4%of 1,286 notices from Ministry of the Environment
2.5%of 567 notices from Ministry of Agriculture, Forestry and Fisheries
559new suppliers since 2024

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

since April 2014
37buyers
8,744notices since 2024
35buyers took a new supplier
1,026suppliers came in that way
Ministry of Land, Infrastructure, Transport and Tourism
1,505 notices
Ministry of Economy, Trade and Industry
1,373 notices
Ministry of Health, Labour and Welfare
1,062 notices
Cabinet Office
861 notices
Ministry of Internal Affairs and Communications
835 notices
National Tax Agency
529 notices
Ministry of Defense
393 notices
Ministry of Finance
235 notices
Cabinet Secretariat
222 notices
Japan Patent Office
216 notices
Ministry of Justice
185 notices
Digital Agency
136 notices
Japan Coast Guard
134 notices
Consumer Affairs Agency
133 notices
Ministry of Education, Culture, Sports, Science and Technology
124 notices
Ministry of Foreign Affairs
117 notices
Children and Families Agency
114 notices
National Police Agency
94 notices
Nuclear Regulation Authority
72 notices
Fire and Disaster Management Agency
65 notices
Japan Meteorological Agency
65 notices
Personal Information Protection Commission
44 notices
Financial Services Agency
43 notices
Japan Fair Trade Commission
35 notices
Supreme Court of Japan
32 notices
Public Prosecutors Office
24 notices
Fisheries Agency
19 notices
Japan Transport Safety Board
12 notices
Board of Audit of Japan
11 notices
Reconstruction Agency
11 notices
Japan Tourism Agency
10 notices
National Personnel Authority
10 notices
House of Representatives
9 notices
Casino Regulatory Commission
8 notices
House of Councillors
3 notices
Agency for Cultural Affairs
2 notices
Environmental Dispute Coordination Commission
1 notice

Suppliers next to it in the line

since January 2024
TOPPAN INC.8 buyers
32 notices
Issei Co., Ltd.
32 notices
DENTSU INC.8 buyers
31 notices
JTB Co., Ltd.12 buyers
31 notices

All 2,380 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.