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Hitachi Construction Machinery Co., Ltd.Taiyuan University of TechnologyXi'an University of Science & TechnologyChina Shenhua Energy Co., Ltd.Huainan Mining (Group) Co., Ltd.Heilongjiang University of Science & TechnologyHuaibei Mining Co., Ltd.Jinneng Holding Equipment Manufacturing Group Co. Ltd.China Coal No. 3 Construction (Group) Corp. Ltd.Shenzhen Inovance Technology Co., Ltd.China Coal Zhangjiakou Coal Mining Machinery Co. Ltd.Anhui Hengyuan Coal Industry & Electricity Power Co., Ltd.RAG AGZhengzhou Coal Mining Machinery Group Co., Ltd.National Mining UniversityAnglo Operations Ltd.Shanxi Fenxi Mining Industry Group Co., Ltd.China Coal Xinji Energy Co., Ltd.Shanxi Lu'an Group Yuwu Coal Industry Co., Ltd.Pingdingshan Tianan Coal Mining Co., Ltd.Pingdingshan Tianan Coal Mining Co., Ltd.DBT GmbHXinwen Mining Group Co., Ltd.Shandong Energy Heavy Equipment Manufacturing Group Co., Ltd.Yunnan Yuntianhua Co., Ltd.Shanxi Coking Coal Group Co. Ltd.China Coal Pingshuo Group Co., Ltd.JSW Steel Ltd.Ningxia Baofeng Energy Group Co., Ltd.Shanghai Chuangli Group Co. Ltd.
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.China National Petroleum Corp.Schlumberger Technologies, Inc.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.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.Shanghai Huahong Grace Semiconductor Manufacturing Corp.Halliburton Co.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.Saint-Gobain PAM Holding SAthyssenkrupp Steel Europe AGToyo Kohan Co., Ltd.Senju Metal Industry Co., Ltd.Usui International Industry Co., LtdVallourec Oil & Gas France SASCNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Nanjing Iron & Steel Co., Ltd.Heraeus Precious Metals GmbH & Co. KGWuhan Iron & Steel Group Corp.
NIPPON STEEL Stainless Steel Corp.Kobe Steel, Ltd.JFE Steel Corp.NKK Corp.NKK Corp.Idemitsu Kosan Co., Ltd.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.Mitsui Mining & Smelting Co., Ltd.Nippon Light Metal Co., Ltd.JSWKennametal, Inc.Angang Steel Co., Ltd.Tanaka Kikinzoku Kogyo KKXi'an University of Science & TechnologyTanaka Holdings Co. Ltd.Sankyo Aluminum Industry Co., Ltd.Alcoa, Inc.Arconic, Inc.Shanghai Huahong Grace Semiconductor Manufacturing Corp.Jinchuan Group Co., Ltd.Global Tungsten & Powders Corp.Showa Aluminum Corp.Armstrong Ceiling Solutions (Australia) Pty Ltd.Wuhan Iron & Steel Co., Ltd.thyssenkrupp Steel Europe AGToyo Kohan Co., Ltd.Senju Metal Industry Co., Ltd.Maanshan Iron & Steel Co., Ltd.Usui International Industry Co., Ltd
China Coal No. 3 Construction (Group) Corp. Ltd.LeTourneau, Inc.Santa Fe International Corp.Petro-CanadaHawker Resources, Inc.Hawker Resources, Inc.Bj Energy Solutions LLCNatural Gas Solutions North America LLCDailey Petroleum Services Corp.Boart Longyear, Inc.Canadian Energy Services LPCanadian Energy Services LPChina Coal Huajin Group Co., Ltd.Caledus Ltd.CORONET-Metallwarenfabrik GmbHChongqing Nantong Mining Co. Ltd.Ocean Drilling & Exploration Co.Ocean Drilling & Exploration Co.Gr Energy Services Management, LPInner Mongolia Mengtai Group Co., Ltd.Shandong Guangming Tungsten & Molybdenum Co. Ltd.Shandong Guangming Tungsten & Molybdenum Co. Ltd.Noble Drilling Corp.Noble Drilling Corp.Shandong Offshore Equipment Co. Ltd.Shandong Offshore Equipment Co. Ltd.Anglo American Industrial Corp. Ltd.Valkyrie Commissioning Services, Inc.Shaanxi Coalbed Methane Development Co., Ltd.Alpine, Inc.
