Koyo Seiko K.K., Tokyo Plant

Koyo Seiko K.K. - Nakagawa Plant

Koyo Seiko K.K

Asahi Seiko K.K. - Nagano Plant

Osaka Seiko K.K. - Amagasaki Plant

Yamamoto Seiko K.K. - Osaka Plant

Nishibayashi Seiko K.K. - Honsha Plant

Asahi Seiko K.K. - Semboku Plant

Nihon Seiko K.K., Sakuramachi Plant

123 Daido Seiko K.K. Osaka Plant

112 Asahi Seiko K.K. Otori Plant

Kokura Seiko K.K., Kokura Seisakusho - Plant Accountability

Koyo Seiko - Kokubu Factory

Kanegafuchi Boseki K.K., Tokyo Plant

Howa Jukogyo K.K., Tokyo Plant

Nippon Gakki Seizo K.K., Tokyo Plant

Mitsui Seiki Kogyo K.K., Tokyo Plant

Tokyo Soda Kogyo K.K. - Caustic Soda Plant Toda Plant

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

Data on Koyo Seiko bearing plant. Report No. 39tt(8), USSBS Index Section 2

List of Authorized Use - Tokyo Juki Kogyo K.K., Tokyo Plant

Nitto Seiko K.K. - Daini Kojo

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

Azuma Seiko, Azuma Plant

Nakayama Seiko - Amagasaki Plant