Hien Electric Industries
Izumi Denki
Kitazawa Denki Seisakusho
Kokosha
Morio Denki
Nippon Sento
Ohishi Electric Industry
Omron Tateishi Electronics
Sakae Senpaku Denki
San-El Electric
Sanshin Senpaku Dengu
Shinko Electric
Shonan Kosakusho
Terasaki Electric
Toshiba
Toyo Electronics
Utsunomiya Electric
Yoshida Denki Kogyo
Iwata
Ohshiima
Setouchi Kogyo
Alfa-Laval Service
Hisaka Works
Miura
Nisshin Refrigeration & Engineering
Sasakura Engineering
Akasaka Diesel
Daihatsu Diesel
Fuji Diesel
Hanshin Diesel Works
Hitachi Shipbuilding & Engineering
Ishikawajima-Harima Heavy Industries Ito Engineering
Kawasaki Heavy Industries
Kobe Diesel
Kubata
Makita Diesel
Mitsubishi Heavy Industries
Mitsui Engineering & Shipbuilding
Niigata Engineering
Nippon Kokan
Otsuko Diesel
Ube Industries
Yanmar Diesel
Aalborg Industries Co., Ltd.
Haneda Pipe Works Co., Ltd.
Hitachi Shipbuilding & Engineering
Gadelius
Innoshima Boiler Co., Ltd.
Ishikawajima-Harima Heavy Industries Co., Ltd.
Ishikawajima Ship & Chemical Plant Co., Ltd.
Kawasaki Heavy Industries, Ltd.
Kikan Buhin Seizosho Co., Ltd.
Kobe Steel Ltd.
Mitsubishi Heavy Industries, Ltd.
Mitsui Shipbuilding Engineering Co., Ltd.
Miura Kogho Co., Ltd.
Nippon Kokan
Nishida Marine Boiler
Osaka Boiler
Sasakura
Takuma
Tortoise Engineering
Volcano
Horiba
Kikan Buhin
Meiyo Electric
Mitsubishi Electric
Musashino Engineering Works
Nakakita Seisakusho
Naniwa Optical Mfg. Co., Ltd.
Nippon Air Brake
Nippon Zosen Kikai
Nishishiba Electric
Nunotani Hakuoy Kelii Kogyo
Osaka Boiler Mfg. Co., Ltd.
Osaka Zoki Valve Ind. Co., Ltd.
Saacke Japan Tratec Ltd.
Saginomiya Seisakusho
Sasebo Heavy Industries Co., Ltd.
Sawada Seisakusho Co., Ltd.
Seo Koatsu Kogyo Co., Ltd.
Shinko Shoji Co., Ltd.
Shonan Kosakusho Co., Ltd.
Sumitomo Metal Industry Ltd.
Sunflame Co., Ltd.
Taiyo Electric
Takuma Boiler Mfg. Co., Ltd.
Tortoise Engineering Co., Ltd.
Tokyo Keiki
Utsuki Keiki
Volcano Co., Ltd.
Yamatake Honeywell
Yokogawa Hokushin Electric
Fuji Electric
Kubota Kogyo
Nishishiba Electric
Osaka Blower
Shinko Electric
Taiyo Electric