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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.China National Offshore Oil Corp.China National Offshore Oil Corp.Schlumberger Canada Ltd.JSWChina General Nuclear Power Corp.China General Nuclear Power Corp.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.Elf Aquitaine Fertilisants
PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.W.R. Grace & Co.Osaka Gas Co., Ltd.Saudi Arabian Oil Co.Shell Oil Co.Standard Oil Co.China University of Petroleum (East China)China University of Petroleum (East China)Sanyo Chemical Industries Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Angang Steel Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Beijing Yanshan Petrochemical Co., Ltd.Albemarle Corp.ConocoPhillipsStorz GmbH & Co. KGTonen General Sekiyu KKElf Aquitaine FertilisantsElf Aquitaine FertilisantsEni SpASK Innovation Co., Ltd.TotalEnergies SEGraco, Inc.Petróleo Brasileiro SA
Catalytic Distillation TechnologiesHisaka Works Ltd.Sulzer Chemtech AGAnhui Gujing Distillery Co., Ltd.Hiraoka & Co. Ltd.Nippon Oil Corp.KaiRui Environmental Protection Technology Co., Ltd.GVS SpAKaiRui Environmental Protection Technology Co., Ltd.GVS SpALIST Technology AGJapan National Oil Corp.Japan National Oil Corp.Pennzoil Products Co.Pennzoil Products Co.Shandong Jinbao Electronics Co., Ltd.Shandong Jinbao Electronics Co., Ltd.Inner Mongolia Hetao Wine Group Co. Ltd.Inner Mongolia Hetao Wine Group Co. Ltd.A.G Essential OilsJapan Chemical Engineering & Machinery Co. Ltd.Colortex SpAPolymem SAHangzhou Turning Energy Technology Development Co., Ltd.Tournaire SAMICRODYN-NADIR GmbHDrilling Specialties Co.Nippon Oil Corp.DEA Minerall AGDEA Mineralöl AG
SK Holdings Co., Ltd. /Old/Biotest AGNippon Oil Corp.Bunge Loders Croklaan BVJapan National Oil Corp.Japan National Oil Corp.Pennzoil Products Co.Pennzoil Products Co.Biolog-id SASSeparex SAAmerican Lecithin Co.Ch-Bioforce OyCh-Bioforce OyThe Williams Cos., Inc.Drilling Specialties Co.Nippon Oil Corp.DEA Minerall AGDEA Mineralöl AGProlupin GmbHMarathon Ashland Petroleum LLCMarathon Ashland Petroleum LLCBP Exploration & Oil, Inc.Protein Discovery, Inc.PT. Megasurya MasArd SABenefuel, Inc.Nova Pangaea Technologies (UK) Ltd.Fen Ep Ltd.IBP Co. Ltd.Rohl-Aufsuchungs AG