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Zijin Mining Group Co., Ltd.Yunnan Copper Co., Ltd.Taizhou Fenghua Copper Industry Co. Ltd.Taixing Shengda Copper Industry Co. Ltd.Taixing Shengda Copper Industry Co. Ltd.Jiangsu Meilin Copper Industry Co. Ltd.Jiangsu Xinhai High-tech New Material Co., Ltd.Andritz MAERZ GmbHCopper Development Association
Kobe Steel, Ltd.JFE Holdings, Inc.Sumitomo Metal Industries Ltd.Sumitomo Heavy Industries, Ltd.Daido Steel Co., Ltd.Toyo Seikan Group Holdings Ltd.Arconic, Inc.Arconic, Inc.Okuma Corp.Global Tungsten & Powders Corp.Ikeda Bussan Co. Ltd.Kurimoto Ltd.Shandong Iron & Steel Co., Ltd.Nanjing Iron & Steel Co., Ltd.China Steel Corp.Sanyo Special Steel Co., Ltd.Aichi Steel Corp.H.C. Starck, Inc.American Flange & Manufacturing Co., Inc.Mitsubishi Steel Mfg. Co., Ltd.ITW Ltd.Zhengzhou Research Institute of Mechanical EngineeringFirst Tractor Co., Ltd.Shin Zu Shing Co., Ltd.Zhengzhou Research Institute of Mechanical EngineeringShin Zu Shing Co., Ltd.Nippon Tungsten Co., Ltd.Rieke LLCNippon Closures Co., Ltd.Intier Automotive, Inc.