ここから本文です。
| Panasonic Corporation | KME Mansfeld GmbH | Asahi Organic Materials Corporation |
| Aurubis AG | Tosen Sangyo Corporation | Ningbo Jintian Copper (Group) Co., Ltd |
| Daisen Sangyo Co., Ltd | Ningbo Boway Alloy Material Co., Ltd | DOWA Metals & Mining Co., Ltd |
| RUI CHIN CO., LTD. | Watanabe Shouten Co., Ltd | Tongling Jingwei Copper Industry Co., Ltd |
| Abdelk Corporation | Libo Industrial Co.,Ltd. | Hishikawa Shoji Co., Ltd |
| Southwest Aluminum (Group) Co., Ltd. | Office Busters Co., Ltd. | Asia Aluminum Factory Co., Ltd |
| Tohoku Hirose Electric Co., Ltd. | Taiwan Yieh Corp | NAKA Industries Co., Ltd. |
| Luoyang Copper Co., Ltd. |