Hitachi Heiki K.K., Omori Plant

Hitachi Heiki K.K

Chuo Kogyo K.K., Omori Plant

Hitachi Seisakusho K.K. - Kuwana Plant

412.31 (Inventory Sheets) Tokushu Koku Heiki K.K. - Shikama Plant, Tokushu Koku Heiki K.K. - Itami Plant, Kyowa Koku Kogyo K.K. - Miki Plant

400.170: Shinko Heiki K.K. (Akashi Plant) - Reconversion & Exemption

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

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

List of 3 Class & Salvage Machines - Narashino Plant, Hitachi Seiki K.K

Hitachi Seisaku-Sho K.K

Kayaba Sangyo K.K., Omori Kojo

Nippon Tokushuko, Omori Plant

Yamatake Kogyo, Omori Plant

Nikko Industrial Co., Omori Plant

Tokushu Koku Heiki Seisakusho - Shikama Plant

Nihon Rayon K.K. - Yonago Plant, Nippon Pulp K.K. - Yonago Plant

Kawasaki Jukogyo K.K. - Nishinomiya Plant, Kawasaki Kokuki Kogyo K.K. - Akashi Plant

Matsushita Kinzoku K.K., Kyushu Plant - Plant Accountability

Kyushu Tekko K.K., Itoshima Plant - Plant Accountability

Kyushu Tekko K.K., Nogata Plant - Plant Accountability

Mobara plant of Hitachi Seisaku - Chiba

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

Nippon Jidosha K.K. - Plant Accountability

Kayaba Sangyo K.K. Plant Accountability

Shinsei Kogyo K.K. - Taniyama Plant