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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
LG Chem Ltd.Honeywell International, Inc.The Dow Chemical Co.Mitsui Chemicals, Inc.Asahi Kasei Corp.Shin-Etsu Chemical Co., Ltd.Union Carbide Corp.PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.UBE Corp.JSR Corp.W.R. Grace & Co.Nippon Kayaku Co., Ltd.Tosoh Corp.Shell Oil Co.China University of Petroleum (East China)China University of Petroleum (East China)BASF Corp.TOKYO OHKA KOGYO CO., LTD.Ocean's King Lighting Science & Technology Co., Ltd.Sanyo Chemical Industries Ltd.Ocean's King Lighting Science & Technology Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Chisso Corp.Snamprogetti SpADongwoo Fine-Chem Co., Ltd.Borealis AGChevron U.S.A., Inc.
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.Eneos Corp.TOHO GAS Co., Ltd.Marathon Oil Co.Sanki Engineering Co., Ltd.
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.Tuboscope Vetco International, Inc.Technip SAJohn Holt PlcSichuan Shudao Equipment & Technology Co., Ltd.LCY Chemical Corp.Lochinvar LLCSensorTran, Inc.Ferroli SpALevima Advanced Materials Corp.Walter 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.
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.Thermax Ltd.Baker Hughes ESP, Inc.U.S. Well Services LLCUfa 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.Enpro Subsea Ltd.Fracmaster Ltd.AVA International CorpShengli Petroleum Administrative BureauTuboscope Vetco International, Inc.Tuboscope Vetco International, Inc.Ruhrpumpen GmbHTechnip SAForchem OyPOM, Inc.Weatherford Canada Ltd.Shengli Oil Field Dongsheng Precision Petroleum Dev 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.Fracmaster Ltd.Tuboscope Vetco International, Inc.Tuboscope Vetco International, Inc.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.Proserv ASCat Tech International Ltd.