| Founded | 
April 18, 1955 | 
| Capital | 
90 million yen | 
| Net sales | 
10.18 billion yen (the fiscal year ending in May 2025) | 
| Representative director | 
president and representative director: TAKAHIKO TANAKA | 
| Number of employees | 
116 employees (as of  August 2024) | 
| Office | 
| Head office | 
1-3 Sakae-cho, Kita-ku, Tokyo, 114-0005 
 tel. +81-3-3913-4123 | 
 
| Itabashi branch | 
1-18-17, Shimura, Itabashi-ku, Tokyo, 174-0056 
 tel. +81-3-3969-4896 | 
 
| Tama branch | 
2-23-5, Kyounancho, Musashino-shi, Tokyo, 180-0023 
 tel. +81-422-32-0002 | 
 
| Branch/business office | 
Niigata/Nishi-tokyo-shi | 
 
| Agency | 
Asaka, Kawaguchi, Satte, Kashiwa, Shibata | 
 
| Consolidated subordinates | 
NAKAJIMA REINETSU KOUGYOU Co., LTD (Katsushika-Ku, Tokyo) 
 NIKKI CO. LTD (Musashino-shi, Tokyo) 
 FUJI-VENTEC. Co., LTD (Odawara-shi, Kanagawa) 
 FUSOU KOUGYOU Co., LTD (Hiratsuka-shi, Kanagawa) | 
 
 
 | 
| Contents of business operation | 
Air conditioning/plumbing work, machinery and instrument installment work, disaster prevention/fire extinguishing facility construction work 
 Manufacture and sales for environmental devices(ARIORES) | 
| Contractor’s license | 
Plumbing work 
 Machinery and instrument installment work | 
Ministry of Land, Infrastructure, Transport and Tourism Permit, No. 18773(Toku-27) | 
 
Fire-fighting facilities construction work 
 Construction work 
 Electric work | 
Ministry of Land, Infrastructure, Transport and Tourism Permit, No. 18773(Pan-27) | 
 
 
 | 
| ISO | 
Obtained the certification of ISO9001 (In 2002) | 
| Access to the head office | 
 
 * A 5-minute walk from the south exit of Oji Station on the JR Line 
 * A 7-minute walk from Kaminakazato Station on the JR Line |