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W.C. Heraeus GmbHJiangxi Copper Corp., Ltd.Phelps Dodge Corp.Corporación Nacional del Cobre de ChileCorporación Nacional del Cobre de ChileKGHM Polska Miedz SAUltrametChimet SpA
NIPPON STEEL Stainless Steel Corp.Kobe Steel, Ltd.IG Farbenindustrie AGJFE Holdings, Inc.American Can Co.Suzuki Co., Ltd.American Can Co.Sumitomo Metal Industries Ltd.Hitachi Metals, Ltd.Proterial Ltd.Hitachi Construction Machinery Co., Ltd.Hitachi Cable Ltd.YKK Corp.YKK Corp.Nissan Chemical Corp.Sumitomo Metal Mining Co. Ltd.PPG Industries Ohio, Inc.JX Nippon Mining & Metals Corp.Daido Steel Co., Ltd.Mitsui Mining & Smelting Co., Ltd.Toyo Seikan Group Holdings Ltd.Baoshan Iron & Steel Co., Ltd.Konami Digital Entertainment Co., Ltd.Baoshan Iron & Steel Co., Ltd.NIPPON STEEL Stainless Steel Corp.Nippon Light Metal Co., Ltd.Sintokogio Ltd.Nippon Micrometal Corp.Kennametal, Inc.Shinko Electric Industries Co., Ltd.
Mitsubishi Materials Corp.Kennametal, Inc.UmicoreJinchuan Group Co., Ltd.Global Tungsten & Powders Corp.Sandvik AktiebolagPrimetals Technologies Austria GmbHH.C. Starck, Inc.Hengdian Group DMEGC Magnetics Co., Ltd.Allied Material Corp.Hengdian Group DMEGC Magnetics Co., Ltd.Nippon Tungsten Co., Ltd.Zhuzhou Cemented Carbides Group Corp. Ltd.Shandong Iron & Steel Group Rizhao Co. Ltd.Xiamen Tungsten Co., Ltd.Jiangxi Rare Earth & Rare Metals Tungsten Group Co. Ltd.Xiamen Golden Egret Special Alloy Co., Ltd.Guangdong Jiana Energy Technology Co., Ltd.Xiamen Golden Egret Special Alloy Co., Ltd.CMOC Group Ltd.Jiangxi Tungsten Holding Group Co., Ltd.Zhejiang Huayou Cobalt Co., Ltd.Guangdong Jiana Energy Technology Co., Ltd.China Molybdenum Co., Ltd.GEM (Jiangsu) Cobalt Industry Co., Ltd.Baowu Heavy Industry Co., Ltd.FUJI DIE Co., Ltd.Chongyi Zhangyuan Tungsten Co., Ltd.Chongyi Zhangyuan Tungsten Co., Ltd.Hunan Shizhuyuan Nonferrous Metals Co., Ltd.
Hitachi Cable Ltd.Daicel Corp.Kunming University of Science & TechnologyDaido Steel Co., Ltd.Mitsui Mining & Smelting Co., Ltd.Taiyuan University of TechnologyNippon Light Metal Co., Ltd.Henan University of Science & TechnologyArconic, Inc.Arconic, Inc.Nanchang Hangkong UniversityUACJ Corp.Shenyang University of TechnologySandvik AktiebolagSenju Metal Industry Co., Ltd.Sumitomo Light Metal Industries Ltd.Sumitomo Light Metal Industries Ltd.British Steel Holdings Ltd.Covidien AGSanyo Special Steel Co., Ltd.Kingfa Sci. & Tech. Co., Ltd.W.C. Heraeus GmbHElkem ASAShenyang Ligong UniversityChongqing University of TechnologyHeilongjiang University of Science & TechnologyH.C. Starck, Inc.Nippon Steel & Sumikin Coated Sheet Corp.Mitsubishi Steel Mfg. Co., Ltd.Totoku Electric Co., Ltd.