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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.
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.The Japan Steel Works Ltd.Chevron U.S.A., Inc.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 SE
Catalytic Distillation TechnologiesHisaka Works Ltd.Sulzer Chemtech AGAnhui Gujing Distillery Co., Ltd.KaiRui Environmental Protection Technology Co., Ltd.GVS SpAKaiRui Environmental Protection Technology Co., Ltd.GVS SpAJapan National Oil Corp.Japan National Oil Corp.Pennzoil Products Co.Shandong Jinbao Electronics Co., Ltd.Shandong Jinbao Electronics Co., Ltd.Inner Mongolia Hetao Wine Group Co. Ltd.A.G Essential OilsJapan Chemical Engineering & Machinery Co. Ltd.Colortex SpAPolymem SATournaire SAImtex Membranes Corp.MICRODYN-NADIR GmbHMarkel Corp.Drilling Specialties Co.Nippon Oil Corp.DEA Minerall AGYoung Living Essential Oils LCMarathon Ashland Petroleum LLCSophim SASEcotechnics SpAZanAqua Technologies, Inc.
SK Holdings Co., Ltd. /Old/Biotest AGBunge Loders Croklaan BVCrown Iron Works Co.Japan National Oil Corp.Japan National Oil Corp.Pennzoil Products Co.Biolog-id SASSeparex SACh-Bioforce OyDrilling Specialties Co.Nippon Oil Corp.DEA Minerall AGProlupin GmbHMarathon Ashland Petroleum LLCBP Exploration & Oil, Inc.Biovelop International ABPT. Megasurya MasArd SABenefuel, Inc.Nova Pangaea Technologies (UK) Ltd.Fen Ep Ltd.IBP Co. Ltd.Rohl-Aufsuchungs AGSanmar Speciality Chemicals Ltd.Oiltek Sdn. Bhd.StaniPharm SASIVO InternationalMarkWest Energy Partners LPChem32 LLC