Place of Employment
Building and Equipment
Asami Co.,Ltd.,
CLIMA-TEQ Co.,Ltd.,

,

,

,
Kyow Exeo Co.,

,
Nishiyama Electric Co.,Ltd.,
Nihon Kensetsu Kogyo Co.,Ltd.,
Nippon COMSYS Co.,
Nihon Building Services
Co.,Ltd.,
Mitsubishi Electric Plant Engineering Co.,Ltd.,
Mitsubishi Electric Building Techno-Service Co.,Ltd.,
Repair Co.,Ltd.,

,
Toa Grout Kogyo Co.,Ltd.,
Toko Electrical Construction Co.,Ltd.,
Toa Grout Kogyo Co.,Ltd.,
Toyooka Denki Co.,Ltd.
Manufacturing

,
G-TEKT (former Kikuchi) Co.,Ltd.,
Hino Seiki Co.,Ltd.,
Hitachi Automotive Systems Ltd.,
Japan Filter Technology Ltd.,
Kokusai Co.,Ltd.,
Koyo Electronics Industries Co.,Ltd.,

,

,
Meiden Engineering Co.,Ltd.,

,
Origin Electric Co.,Ltd.,

,
TESEC Co.,
Uchiyamadenki Co.,Ltd.
Distributing

,
Kanto Hitachi (former Tokyo Hitachi) Co.,Ltd.,
Spraying Systems Co.,
Tomoe Shokai Co.,Ltd.,
Nissan Prince Tokyo Co.,Ltd.,
Japan Kenzai (former Madera) Co.,Ltd.
Service(inc IT)
Oriental Land Co.,Ltd.,
Ltd. Shoei Dengyosha,
DTS Co.,
East Japan Railway Co.,Ltd.,
West Japan Railway Co.,Ltd.,
Mystar Engineering Co.,
Technol Seven Co.,Ltd.,
Topengineering Inc.,
Forum Engineering Inc.,
Aspark Co.,Ltd.,
Takinogawa Group Inc.,
Yasuda Joho Co.,Ltd.,
Phoenix
Co. Ltd.,
Wintec
Co. Ltd.,
KyosaiTechnos Co. Ltd.,
Koito Electric Industries, Ltd.,

,
Newton Co. Ltd.,
Garden Group Co. Ltd.,
Trick Sters Inc.,
Positive One Co. Ltd.,
Meiho Group Co. Ltd.,
Starts Careservice Co. Ltd.,
Tokyo Metro Co. Ltd.,

,
Real Estate Business
Uniliving Co. Ltd.
Public service
Ministry of Defense