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

Matsushita Electric Ind. Co. - Tsuda Plant, Matsushita Electric Ind. Co. - Kyoto Plant, Futaba Machine Tool Co. (Minoura Machine Tool Co.)

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