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Kubota Corp.Hitachi Metals, Ltd.Proterial Ltd.Ryobi Ltd.Kurimoto Ltd.Xinxing Ductile Iron Pipes Co., Ltd.Wuhu Xinxing Ductile Iron Pipes Co., Ltd.United States Pipe & Foundry Co. LLCMetso Minerals Industries, Inc.American Cast Iron Pipe Co.Hebei Xinxing Ductile Iron Pipes Co. Ltd.Kolbenschmidt Pierburg Shanghai Nonferrous Components Co., LtdHuangshi Xinxing Pipes Co., Ltd.Changzhou Huade Machine Co. Ltd.Gunite EMI Corp.HUA Dong Teksid Automotive Foundry Co., Ltd.Xinxing Ductile Iron Pipes Xinjiang Co., Ltd.Teksid SpAShandong Huifeng Casting Technology Co., Ltd.Anhui Yingliu Electromechanical Co., Ltd.Weifang 100Tong Casting Co., Ltd.Laizhou Xinzhongyao Machinery Co. Ltd.ASIMCO International Casting Co., Ltd. (Shanxi)ASIMCO Camshaft (Yizheng) Co., Ltd.ASIMCO Camshaft (Yizheng) Co., Ltd.Accuride Corp.Brakes India Pvt Ltd.McWane Cast Iron Pipe Co.Kuo Toong International Co., Ltd.Neenah Foundry Co.
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.JX Nippon Mining & Metals Corp.Daido Steel Co., Ltd.Johnson Matthey PlcMitsui Mining & Smelting Co., Ltd.Toyo Seikan Group Holdings Ltd.Baoshan Iron & Steel Co., Ltd.Konami Digital Entertainment Co., Ltd.Baoshan Iron & Steel Co., Ltd.Maxell Ltd.NIPPON STEEL Stainless Steel Corp.Nippon Light Metal Co., Ltd.Sintokogio Ltd.Nippon Micrometal Corp.Kennametal, Inc.
NIPPON STEEL Stainless Steel Corp.Kobe Steel, Ltd.JFE Steel Corp.NKK Corp.NKK Corp.Idemitsu Kosan Co., Ltd.JX Nippon Mining & Metals Corp.Mitsui Mining & Smelting Co., Ltd.Baoshan Iron & Steel Co., Ltd.Baoshan Iron & Steel Co., Ltd.NIPPON STEEL Stainless Steel Corp.JSWNippon Light Metal Co., Ltd.Kennametal, Inc.Angang Steel Co., Ltd.Xi'an University of Science & TechnologyTanaka Kikinzoku Kogyo KKTanaka Holdings Co. Ltd.Sankyo Aluminum Industry Co., Ltd.Arconic, Inc.Arconic, Inc.Showa Aluminum Corp.Jinchuan Group Co., Ltd.Global Tungsten & Powders Corp.Armstrong Ceiling Solutions (Australia) Pty Ltd.Wuhan Iron & Steel Co., Ltd.Dowa Electronics Materials Co., Ltd.Sandvik AktiebolagToyo Kohan Co., Ltd.thyssenkrupp Steel Europe AG
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.Sumitomo Metal Mining Co. Ltd.JX Nippon Mining & Metals Corp.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.Baoshan Iron & Steel Co., Ltd.NIPPON STEEL Stainless Steel Corp.China National Offshore Oil Corp.China National Offshore Oil Corp.Tanaka Kikinzoku Kogyo KKTanaka Holdings Co. Ltd.Sankyo Aluminum Industry Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.Toyo Kohan Co., Ltd.thyssenkrupp Steel Europe AGUsui Co. Ltd.Senju Metal Industry Co., Ltd.Shanxi Taigang Stainless Steel Co., Ltd.CNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Wuhan Iron & Steel Group Corp.Nanjing Iron & Steel Co., Ltd.Nippon Steel Metal Products Co., Ltd
Kubota Corp.Shin-Etsu Polymer Co., Ltd.Xinxing Ductile Iron Pipes Co., Ltd.Wuhu Xinxing Ductile Iron Pipes Co., Ltd.Vallourec SAUnited States Pipe & Foundry Co. LLCZhejiang Zhongcai Pipes Science & Technology Co. Ltd.American Cast Iron Pipe Co.Hebei Xinxing Ductile Iron Pipes Co. Ltd.Supreme Industries Ltd.Huangshi Xinxing Pipes Co., Ltd.Mercury Plastics LLCSaint-Gobain Construction Products UK Ltd.The Ford Meter Box Co., Inc.North American Pipe Corp.Kuo Toong International Co., Ltd.Perma-Pipe, Inc.Prinsco, Inc.Walter Coke, Inc.Charlotte Pipe & Foundry Co.Jindal SAW Ltd.CANTEX, Inc.Electrosteel Castings Ltd.VIP-Polymers Ltd.HOBAS Engineering + Rohre AGAsahi/America, Inc.USP Holdings, Inc.Northwest Pipe Co.Prime Conduit, Inc.Star Pipe Products Ltd.