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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 SAMesser SE & Co. KGaA (Germany)Conoco, Inc.ConocoPhillipsSinopec Oilfield Service Corp.Conoco, Inc.
PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Chevron U.S.A., Inc.JX Nippon Oil & Energy Marine Service Corp.Sinopec Oilfield Service Corp.Eni SpATotalEnergies SEEneos Corp.Solutia, Inc.Infineum International Ltd.Castrol Ltd.Gulf Oil LPIndian Oil Corp. Ltd.Phillips 66Repsol SAThe Elco Corp.Hindustan Petroleum Corp. Ltd.Klüber Lubrication München SE & Co. KGYamashin-Filter Corp.Konan Electric Co., Ltd.Emery Oleochemicals GmbHQuaker HoughtonKing Industries, Inc.Bharat Petroleum Corp. Ltd.Scholle IPN Corp.Dover Chemical Corp.PT Pertamina (Persero)Anhui Zhongtian Petrochemical Co., Ltd.S-Oil Corp.
PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Saudi Arabian Oil Co.Chevron U.S.A., Inc.JX Nippon Oil & Energy Marine Service Corp.Sinopec Oilfield Service Corp.Elf Aquitaine FertilisantsElf Aquitaine FertilisantsEni SpAAmoco Corp.TotalEnergies SEPetróleo Brasileiro SAThe Chemours Co.Eneos Corp.Infineum International Ltd.Castrol Ltd.Gulf Oil LPIndian Oil Corp. Ltd.Berry Plastics Holding Corp.Phillips 66Sekisui Polymatech Co., Ltd.Kyodo Yushi Co., Ltd.Suncor Energy, Inc.Zalman Tech Co., Ltd.Repsol SAGS Caltex Corp.The Elco Corp.Nippon Fine Chemical Co., Ltd.Zurn Industries LLC
PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Saudi Arabian Oil Co.NOK Corp.The Lubrizol Corp.Chevron U.S.A., Inc.Husqvarna ABJX Nippon Oil & Energy Marine Service Corp.Sinopec Oilfield Service Corp.Elf Aquitaine FertilisantsElf Aquitaine FertilisantsEni SpATotalEnergies SEGraco, Inc.Petróleo Brasileiro SAAshland LLCEneos Corp.Afton Chemical Corp.Cognis Deutschland GmbH & Co. KGInfineum International Ltd.Graham Packaging Co. LPCastrol Ltd.BP Exploration Operating Co. Ltd.SEPPIC SACroda International PlcGulf Oil LPThe Swagelok Co.Harima Chemicals Group, Inc.Gulf Oil International UK Ltd.