- KOYO KASEI Corporatio
- Address:2-509-1, Mihashi, Oomiyaku
- Sanplatec Cor
- Address:No.1-3, 2-Chome Doshin, Kita-Ku, Osaka, 530-0035 Japa
- SANPLATEC CORP.
- Address:2-1-3, Doshin, Kita-ku
- Maruichi Company Limited
- Address:4-chome tohon-cho, seto, aichi, Japan,489-0045
- NITTO KINZOKU KOGYO CO., LTD.
- Address:2-53-2, Nihonbashihamacho
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