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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.
Sumitomo Electric Industries Ltd.Sumitomo Electric Industries Ltd.Rohm & Haas Co.Hitachi Metals, Ltd.Proterial Ltd.Daido Steel Co., Ltd.Tokin Corp. /JP/INAX Corp.Railway Technical Research InstituteShenyang University of TechnologyNEOMAX Co., Ltd.Sanyo Special Steel Co., Ltd.Aichi Steel Corp.Towa Corp.Kokusan Denki Co., Ltd.VACUUMSCHMELZE GmbH & Co. KGToshiba Materials Co., Ltd.Hengdian Group DMEGC Magnetics Co., Ltd.AMOGREENTECH Co., Ltd.Zhongshan Broad-Ocean Motor Co., Ltd.Mitsubishi Steel Mfg. Co., Ltd.Hengdian Group DMEGC Magnetics Co., Ltd.EM-Tech. Co., Ltd.Guodian United Power Technology Co., Ltd.GKN Sinter Metals LLCSKF Industrie SpAAdvanced Technology & Materials Co., Ltd.Beijing Zhong Ke San Huan High-Tech Co., Ltd.Nikko-Materials Co., Ltd.LONGi Magnet Co., Ltd.
Minebea Mitsumi, Inc.AKZO Nobel Coatings International BVBASF Coatings Ltd.Tokai Carbon Co., Ltd.Maruyama Mfg Co., Inc.Coronet-Werke GmbHYamabiko Corp.GB Boucherie NVUhlmann Pac-Systeme GmbH & Co. KGNingbo Daye Garden Machinery Co., Ltd.Ningbo Daye Garden Machinery Co., Ltd.Zahoransky AGF.S. Korea Industrial, Inc.Vorwerk Elektrowerke GmbH & Co. KGCoates Brothers & Co. Ltd.Cross Manufacturing Co. (1938) Ltd.VERMOP Salmon GmbHTsuchiya TSCO Co. Ltd.Nikkari Co. Ltd.Minebea Motor Manufacturing Corp.Silicon Touch Technology, Inc.Emak SpAPedex GmbHHuei Tyng Enterprise Co. Ltd.Martini SpAKuretake Co. Ltd.Ningbo Dongchuan Swimming Pool Equipment Co., Ltd.Ningbo Dongchuan Swimming Pool Equipment Co., Ltd.SCHÜMANN SASOL GmbH & Co. KGSCHÜMANN SASOL GmbH & Co. KG
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.AVA International CorpFracmaster Ltd.Tuboscope Vetco International, Inc.Tuboscope Vetco International, Inc.Technip SAPOM, Inc.Weatherford Canada Ltd.HYUNDAI Corp.Control Flow, Inc.Shengli Oil Field Dongsheng Precision Petroleum Dev Co., Ltd.Seabed Separation AS
Halliburton Energy Services, Inc.PetroChina Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.Osaka Gas Co., Ltd.Saudi Arabian Oil Co.Shell Oil Co.Standard Oil Co.Tokyo Gas Co., Ltd.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.Halliburton Co.ConocoPhillipsTonen General Sekiyu KKEni SpATotalEnergies SESmith International, Inc.Graco, Inc.Petróleo Brasileiro SATatsuno Corp.CNOOC Energy Technology & Services Ltd.Eneos Corp.TOHO GAS Co., Ltd.