Taihei Kogyo Co. - Shinodayama Plant

Dainippon Koki Co., Ltd. (Taihei Kogyo) - Shinodayama Plant

Shinsei Kogyo Co., Ltd. - Plant Accountability

Taihei Kogyo K.K. (Mitsubishi Mining Co., Ltd.) (File #274)

Taihei Kogyo K.K., Kogyo Kenkyujo (File #273)

Osaka Forging Co., Kokoku Ind. Co., Mitsubishi Mokushitsu Kogyo K.K. - Chishimacho Plant

Hirose Iron Works, Hirano Bearing Mfg. Co., Minato Electric Co., Daido Kogyo Co. - Mikuni Plant

Taihei Kogyo K.K. (Furuya Jukogyo)

Daiwa Kogyo Co

Takigawa Kogyo Co

Asia Tetsu-gyo K.K., Koyo Mfg. Co. - Hanaten Plant, Koyo Kogyo Co., Araya Industrial Co. - Steel Foundry

List of Authorized Use - Nippon Kentetsu Kogyo Co., Ltd. Nakagawa Plant

Nippon Aluminum Kogyo K.K. (Mitsubishi Light Metal Mfg. Co.) - Mikuni Plant

Minato Electric Machine Ind. Co., Osaka Heavy Ind. Co. - Kanzakigawa Plant, Osaka Sanso Kogyo Co., Saeki Kikai Kogyosho

Daido Keikinzoku Kogyo K.K. - Sakai Plant, Mitsuwa Industry Co., Mitsumoto Kinzoku Kogyo - Domyoji Factory, Mitsubishi Kakoki K.K. (chemical Machine) - Sakai Plant

Taihei Kogyo K.K., Osaka Refinery (File #275)

Higuchi Seiki Kogyo K.K., Asahi Kiko Co., Asahi Kinzoku Kogyo - Osaka Kojo, Asahi Seiko K.K. - Sakai Plant

Taihei Mining Co. 98-010-11

Yamatake Kogyo, Omori Plant

Amatsuji Kogyo - Sennan Plant

List of Authorized Use - Nisshin Industry Co., Ltd. Itabashi Plant (Kakuwa Kokuki Kogyo K.K.)

Shinsei Kogyo K.K. - Taniyama Plant

Nippon Tanatsu Kogyo Plant #5

Chuo Kogyo K.K., Omori Plant

Chuo Kogyo K.K., Rokugo Plant