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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
PetroChina 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.Conoco, Inc.
Hitachi Plant Technologies Ltd.TEC, Inc.Sungrow Power Supply Co., Ltd.Beijing Shenwu Environment & Energy Technology Co., Ltd.Takasago Thermal Engineering Co., Ltd.Geco TechnologiesAmetech, Inc.BASF Catalysts LLCFEV Motorentechnik GmbH & Co. KGKatayama Chemical, Inc.Beijing GeoEnviron Engineering & Technology, Inc.Beijing GeoEnviron Engineering & Technology, Inc.Fameccanica Data SpAOrmat Technologies, Inc.Trojan Technologies, Inc.Shandong Intco Recycling Resources Co., Ltd.Biolase SpABeijing Drainage Group Co., Ltd.FITT SpAZhejiang Feida Environmental Science & Technology Co., Ltd.Beijing Sanju Environmental Protection & New Materials Co Ltd.Beijing Haixin Energy Technology Co., Ltd.Tokamak Energy Ltd.Zller-Kipper GmbHGuangxi Bossco Environmental Protection Technology Co., Ltd.Crayola LLCXingyuan Environment Technology Co., Ltd.Shanghai Kanghuan Environment Co. Ltd.Beijing SPC Environment Protection Tech Co., Ltd.PMD Technologies Ltd.
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.Sumitomo Metal Mining Co. Ltd.Schlumberger Technologies, Inc.JX Nippon Mining & Metals Corp.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.Baoshan Iron & Steel Co., Ltd.NIPPON STEEL Stainless Steel Corp.China National Offshore Oil Corp.China National Offshore Oil Corp.Tanaka Kikinzoku Kogyo KKTanaka Holdings Co. Ltd.Sankyo Aluminum Industry Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Halliburton Co.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.Toyo Kohan Co., Ltd.thyssenkrupp Steel Europe AGUsui Co. Ltd.Senju Metal Industry Co., Ltd.Shanxi Taigang Stainless Steel Co., Ltd.CNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Wuhan Iron & Steel Group Corp.