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Kubota Corp.Mazda Motor Corp.IG Farbenindustrie AGYamaha Corp.Lucas Industries PlcSaudi Arabian Oil Co.Shell Oil Co.Hino Motors, Ltd.Yanmar Co., Ltd.Johnson Matthey PlcBorgWarner, Inc.The Lubrizol Corp.Beijing Yanshan Petrochemical Co., Ltd.Messer SE & Co. KGaA (Germany)Conoco, Inc.Sinopec Oilfield Service Corp.Conoco, Inc.Eni SpAKeihin Corp.Amoco Corp.TotalEnergies SESsangyong Motor Co., Ltd.Loncin Motor Co., Ltd.Afton Chemical Corp.Magna International, Inc.Infineum International Ltd.Lifan Technology (Group) Co., Ltd.Nippon Piston Ring Co., Ltd.Key Safety Systems, Inc.Mitsubishi Heavy Industries Engine & Turbocharger Ltd.
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