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PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.Osaka Gas Co., Ltd.Saudi Arabian Oil Co.Schlumberger Technologies, Inc.Standard Oil Co.Tokyo Gas Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Schlumberger Canada Ltd.JSWChina General Nuclear Power Corp.China General Nuclear Power Corp.Chevron U.S.A., Inc.Voith GmbH & Co. KGaADuksan Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Beijing Yanshan Petrochemical Co., Ltd.Électricité de France SAElf Atochem SAHalliburton Co.Messer SE & Co. KGaA (Germany)Conoco, Inc.ConocoPhillipsSinopec Oilfield Service Corp.Conoco, Inc.
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
Halliburton Energy Services, Inc.Halliburton Co.CNPC Bohai Drilling Engineering Co. Ltd.CNPC Bohai Drilling Engineering Co. Ltd.China Oilfield Services Ltd.Oceaneering International, Inc.Vallourec SADril-Quip, Inc.C. & J. Clark International Ltd.Anton Oilfield Services (Group) Ltd.Scientific Drilling International, Inc.Packers Plus Energy Services, Inc.Trican Well Service Ltd.Subsea Technologies Group Ltd.Altus Intervention ASRPC, Inc.Gyrodata, Inc.Valaris PlcGeoservices SAHelix Energy Solutions Group, Inc.Ziebel ASQuality Intervention ASTempress Technologies, Inc.Calfrac Well Services Ltd.Bilco Tools, Inc.Wireline Engineering Ltd.Drillform Technical Services Ltd.Lupatech SATecWel ASWenzel Downhole Tools Ltd.
Technip France SASVetco Gray, Inc.BL Technology, Inc.Korea Shipbuilding & Offshore Engineering Co., Ltd.Korea Shipbuilding & Offshore Engineering Co., Ltd.Oceaneering International, Inc.Dril-Quip, Inc.Telstra Corp. Ltd.Telstra Ltd.National Coupling Co., Inc.SubCom LLCSubsea 7 Norway ASHeerema Marine Contractors Nederland SEEvotec ASCOOEC Subsea Technology Co., Ltd.Subsea Technologies Group Ltd.Sensor Highway Ltd.Wfs Technologies Ltd.Fugro NVSuzhou Douson Drilling & Production Equipment Co., Ltd.Soil Machine Dynamics Ltd.Hydroacoustics, Inc.Xtera Communications, Inc.Nanjing Develop Advanced Manufacturing Co., Ltd.Nanjing Develop Advanced Manufacturing Co., Ltd.Suzhou Douson Drilling & Production Equipment Co., Ltd.Neptune Subsea IP Ltd.Allseas Group SAMagma Global Ltd.MSP/DRILEX (Shanghai) Co., Ltd.
Dresser Industries, Inc.Dresser Industries, Inc.Petrolite Corp.Camco International, Inc.Yanchang Oil Field Co., Ltd.Weatherford U.S. LPGuizhou Gaofeng Petroleum Machinery Co., Ltd.Baker Hughes ESP, Inc.Ufa State Petroleum Technological UniversityShengli Oil Field Shengli Power Machinery Co. Ltd.Lubrizol Oilfield Solutions, Inc.Gulf Canada Resources Ltd.The Petroleum Oil & Gas Corporation of South Africa (Pty) Ltd.Essef Corp.Teleco Oilfield Services, Inc.Essef Corp.AVA International CorpFracmaster Ltd.Enpro Subsea Ltd.Ruhrpumpen GmbHTuboscope Vetco International, Inc.Forchem OyAbrado, Inc.POM, Inc.Weatherford Canada Ltd.HYUNDAI Corp.Control Flow, Inc.Shengli Oil Field Dongsheng Precision Petroleum Dev Co., Ltd.Seabed Separation ASXinjiang Zhundong Petroleum Technology Co. Ltd.
M-I LLCShanghai SK Petroleum & Chemical Equipment Corp. Ltd.Flow-Rite Controls Ltd.Subsea Technologies Group Ltd.Maersk Drilling A/SCubility ASWild Well Control, Inc.Target Well Control Ltd.AXON EP, Inc.Cudd Pressure Control, Inc.Gushor, Inc.Specialty Rental Tools & Supply LP