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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
Halliburton Energy Services, Inc.PetroChina Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.Osaka Gas Co., Ltd.Saudi Arabian Oil Co.Shell Oil Co.Standard Oil Co.BASF Corp.Tokyo Electric Power Co. Holdings, Inc.China National Offshore Oil Corp.China National Offshore Oil Corp.JSWToagosei Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Halliburton Co.ConocoPhillipsTonen General Sekiyu KKEni SpATotalEnergies SESmith International, Inc.Graco, Inc.Petróleo Brasileiro SATatsuno Corp.CNOOC Energy Technology & Services Ltd.Shell Canada Ltd.Eneos Corp.Marathon Oil Co.
Scientific Drilling International, Inc.Shanxi Meijin Energy Co., Ltd.China United Coalbed Methane Corp. Ltd.China United Coalbed Methane Corp. Ltd.Shanxi Lanyan Coalbed Methane Group Co. Ltd.Shanxi Blue Flame Holding Co., Ltd.CONSOL Energy, Inc.TerraTek, Inc.Shanxi Lu'an Jinyuan Coalbed Methane Development Co., 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)Kolon Industries, Inc.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.
Hitachi Construction Machinery Co., Ltd.UBE Corp.Taiyuan University of TechnologyXi'an University of Science & TechnologyChina Shenhua Energy Co., Ltd.Huainan Mining (Group) Co., Ltd.Huainan Mining (Group) Co., Ltd.Heilongjiang University of Science & TechnologyHuaibei Mining Co., Ltd.Taiyuan Institute of China Coal Research InstituteJinneng Holding Equipment Manufacturing Group Co. Ltd.Jinneng Holdings Coal Industry Group Co., Ltd.Shenzhen Inovance Technology Co., Ltd.China Coal No. 3 Construction (Group) Corp. Ltd.DetNet South Africa (Pty) Ltd.China Coal No. 3 Construction (Group) Corp. Ltd.Shenzhen Inovance Technology Co., Ltd.China Coal Zhangjiakou Coal Mining Machinery Co. Ltd.Anhui Hengyuan Coal Industry & Electricity Power Co., Ltd.RAG AGZhengzhou Coal Mining Machinery Group Co., Ltd.National Mining UniversityAnglo Operations Ltd.Shanxi Fenxi Mining Industry Group Co., Ltd.China Coal Xinji Energy Co., Ltd.Shanxi Lu'an Group Yuwu Coal Industry Co., Ltd.Pingdingshan Tianan Coal Mining Co., Ltd.Pingdingshan Tianan Coal Mining Co., Ltd.Xinwen Mining Group Co., Ltd.Shandong Energy Heavy Equipment Manufacturing Group Co., Ltd.
Idemitsu Kosan Co., Ltd.Hitachi Construction Machinery Co., Ltd.UBE Corp.Taiyuan University of TechnologyAngang Steel Co., Ltd.Xi'an University of Science & TechnologyChina Shenhua Energy Co., Ltd.China Energy Investment Corp., Ltd.Wuhan Iron & Steel Group Corp.Aluminium Pechiney SASUHuainan Mining (Group) Co., Ltd.Huainan Mining (Group) Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.Tokai Carbon Co., Ltd.Heilongjiang University of Science & TechnologyBeijing Shenwu Environment & Energy Technology Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Guangdong Zhongnan Iron & Steel Co., Ltd.SGIS Songshan Co., Ltd.China Shenhua Coal to Liquid & Chemical Co., Ltd.Tiandi Science & Technology Co., Ltd.Joy Global Underground Mining LLCBaosteel Group Xinjiang Bayi Iron & Steel Co., Ltd.Wengfu (Group) Co., Ltd.Wengfu (Group) Co., Ltd.Jinneng Holding Equipment Manufacturing Group Co. Ltd.Hydril Co.