| Aichi Steelworks, Ltd. | Nippon Metal Industry Co. |
| Alpolic Corporation | Nippon Steel Corporation |
| Daido Steel Co., Ltd. | Nippon Yakin Kogyo Co., Ltd. |
| Daido Steel Sheet Corporation | Nisshin Steel Co., Ltd. |
| Japan Metals & Chemicals | Nkk Corporation |
| Kansai Wire Netting Co., Ltd. | Pacific Sowa |
| Kawasaki Steel Corporation | Sanyo Special Steel Co., Ltd. |
| Kobe Steel, Ltd. | Sato-Shoji Corporation |
| Kobelco Construction Machinery Co., Ltd. | Sumitomo Metal Industries |
| Kurimoto, Ltd. | The Japan Steelworks Ltd. |
| Mitsubishi Steel Mfg Co., Ltd. | Toyo Kohan Co., Ltd. |
| Nakayama Steel Works, Ltd. | Uddeholm K.K. |
| Nippon Denko Co., Ltd. |
责任编辑：mman
