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PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Mobil Corp.Exxon Mobil Corp.Standard Oil Co.Saudi Arabian Oil Co.China National Petroleum Corp.Osaka Gas Co., Ltd.Schlumberger Technologies, Inc.Standard Oil Co.Tokyo Gas Co., Ltd.Elf Atochem SAChina National Offshore Oil Corp.China National Offshore Oil Corp.JSWChina General Nuclear Power Corp.Voith GmbH & Co. KGaADuksan Co., Ltd.Beijing Yanshan Petrochemical Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Électricité de France SAElf Aquitaine FertilisantsHalliburton Co.Shell Deepwater Development, Inc.Messer SE & Co. KGaA (Germany)Eni SpAConoco, Inc.ConocoPhillipsSinopec Oilfield Service Corp.
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.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.thyssenkrupp 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 Metal Products Co., LtdBaotou Iron & Steel (Group) Co. Ltd.
China Coal No. 3 Construction (Group) Corp. 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.