Nippon Tokushuko, Omori Plant

Yamatake Kogyo, Omori Plant

Chuo Kogyo K.K., Omori Plant

Nikko Industrial Co., Omori Plant

Hitachi Heiki K.K., Omori Plant

Nippon Kinzoku, Matsuda Plant

Nippon Kogaku, Oi Plant

Nippon Hassoden - Kizukawa Plant

Nippon Hassoden K.K., Ainoura Power Plant - Plant Accountability

Nippon Jidosha K.K. - Plant Accountability

Nippon Tanatsu Kogyo Plant #5

Nippon Hassoden K.K. - Shikamako Plant

Nippon Kogaku Kogyo, Oi Plant

Nippon Nainenki K.K., Kamata Plant

Nippon Tanatsu Kogyo - Plant #5

Nippon Kinzoku Sangyo, Machida Plant

Nippon Hassoden - Ainoura Power Plant

Nippon Kinzoku Sangyo, Tsudanuma Plant

List of Authorized Use - Chuo Kogyo K.K. Omori Plant

List of Authorized Use - Nikko Kogyo K.K. Omori Plant

Nippon Typewriter Co. - Mikuni Plant (Nakajima Kikai Osaka Plant)

Nippon Denki Yakin K.K. - Daimon Plant (Non-reparation Plant)

Nippon Gakki Seizo K.K., Tokyo Plant

Nippon Kagaku Kogyo K.K., 2nd Plant

Nippon Typewriter Co., Ltd. - Kema Plant