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BASF SEPetroChina 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.
Svenska Rotor Maskiner ABThe Swagelok Co.Henan Pinggao Electric Co., Ltd.Sugino Machine Ltd.Zhejiang Yat Electrical Appliance Co., Ltd.Nishishiba Electric Co., Ltd.Linde Hydraulics GmbH & Co. KGTianjin Pipe (Group) Corp.National Coupling Co., Inc.SPM Oil & Gas, Inc.Jiangsu Hengli Hydraulic Co., Ltd.Nihon Kogyo Co., Ltd.Kronoplus Ltd.Lanzhou LS Heavy Equipment Co., Ltd.Lanzhou LS Heavy Equipment Co., Ltd.Jiangsu Hengli Hydraulic Technology Co., Ltd.Emak SpAZhejiang Innuovo Machinery Co., Ltd.Avure Technologies, Inc.FUJI DIE Co., Ltd.Nantong A.M.C. Machinery Co. Ltd.Nanyue Fuel Injection Systems Co., Ltd.Nanyue Fuel Injection Systems Co., Ltd.Lanzhou High Pressure Valves Co. Ltd.Foro Energy, Inc.Nanjing Kangni New Energy Auto Parts Co., Ltd.Zhejiang Kangsheng Co., Ltd.Landai Technology Group Corp. Ltd.Scientific Systems, Inc.Suzhou Sanji Foundry Equipment Co., Ltd.
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.Sumitomo Metal Mining Co. Ltd.Schlumberger Technologies, Inc.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.Halliburton Co.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.
Halliburton Energy Services, Inc.PetroChina Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.Osaka Gas Co., Ltd.Shell Oil Co.Standard Oil Co.Tokyo Gas Co., Ltd.BASF Corp.Tokyo Electric Power Co. Holdings, Inc.China National Offshore Oil Corp.China National Offshore Oil Corp.JSWChevron U.S.A., Inc.Toagosei Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.ConocoPhillipsTonen General Sekiyu KKEni SpATotalEnergies SESmith International, Inc.Graco, Inc.Tatsuno Corp.CNOOC Energy Technology & Services Ltd.Shell Canada Ltd.Eneos Corp.TOHO GAS Co., Ltd.Marathon Oil Co.
Dresser Industries, Inc.Dresser Industries, Inc.Toyo Kanetsu KKSuzhou Hycan Holdings Co., Ltd.Veeder Industries, Inc.Kawata Mfg. Co., Ltd.Kawata Mfg. Co., Ltd.Gulf Canada Resources Ltd.Bradford White Corp.Essef Corp.Essef Corp.Nanjing Auto Electric Co. Ltd.Graver Tank & Manufacturing Co., Inc.Tuboscope Vetco International, Inc.John Holt PlcLochinvar LLCNippon Kaiko Co., Ltd.SensorTran, Inc.LCY Chemical Corp.Ferroli SpAWalter Tosto Serbatoi SpAXerxes Corp.Dongguan Sanjiang Port Storage Tank Co., Ltd.Dongguan Sanjiang Port Storage Tank Co., Ltd.H.C. Price Co.Plasticon Germany GmbHDYK, Inc.Shanghai Erhuajie Electromechanical Equipment Mfg Co., Ltd.Shandong Huajian Storage Equipment Technology Co. Ltd.Team Poly Pty 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.
Dresser Industries, Inc.Dresser Industries, Inc.Niigata Engineering Co., Ltd.DKK-TOA Corp.KiOR, Inc.Gulf Canada Resources Ltd.Goodwin PlcEssef Corp.Essef Corp.Tuboscope Vetco International, Inc.S-Oil Corp.Nagarjuna Fertilizers & Chemicals Ltd.OMV Refining & Marketing GmbHHyundai Oilbank Corp.H.C. Price Co.Petro-Chem Development Co., Inc.Wuhan Petrochemical Engineering Design Co., Ltd.Oilflow Solutions, Inc.Biota Guard ASBiota Guard ASServ-Tech, Inc.Cokebusters Ltd.TORR Canada, Inc.Allis-Chalmers Energy, Inc.Techint SAEuropean Marine Contractors Ltd.Veritas DGC, Inc.Cat Tech International Ltd.Construtora Andrade Gutierrez SAAD Systems SAS