Metalor, AMI DODUCO, Umicore, Toshiba, Chugai Electric, Tanaka, Heesung, MATERION, MITSUBISHI Material, Nippon Tungsten, Brainin, Funda, Hongfeng, Longsun, Guilin Coninst, Foshan MTgbao, Shanghai Renmin, Zhejiang Metallurgical, Anping Feichang, Zhejiang Leyin, SHANGHAI XIAOJING