- KIKUCHI SHEET KOGYO CO., LTD.
- Address:3-7-34, Imazunaka,
- KUNO SANGYO CO., LTD
- Address:3-6-7, Tateishi
- GONDA METAL INDUSTRY CO., LTD.
- Address:1-1-16, Miyashimo, Chuo-ku
- Kowa Trade and Commerce Co., Ltd.
- Address:5F, Reoma Bldg., No.10-6, Mita 2-Chome
- SHINX CORPORATION CO.,LTD.
- Address:4057-2, Nakatsuazasakuradai, Aikawamachi,
- SANSHIN KINZOKU CO.LTD.
- Address:1-14-10, Saga
- AMAR ENTERPRISES CO.LTD
- Address:1076-1, OOAZA KOMIZOU, IWATSUKI-KU, SAITAMA-SHI,
- YAMAMOTO SHOKAI COMPANY
- Address:3-17, Nangodori20chomekita, Shiroishi-ku
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