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PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Mobil Corp.Exxon Mobil Corp.Standard Oil Co.Saudi Arabian Oil Co.China National Petroleum Corp.Osaka Gas Co., Ltd.Schlumberger Technologies, Inc.Standard Oil Co.Tokyo Gas Co., Ltd.Elf Atochem SAChina National Offshore Oil Corp.China National Offshore Oil Corp.China General Nuclear Power Corp.JSWExxonmobil Upstream Research Co.China General Nuclear Power Corp.Voith GmbH & Co. KGaADuksan Co., Ltd.Beijing Yanshan Petrochemical Co., Ltd.Dresser Industries, Inc.Électricité de France SAElf Aquitaine FertilisantsHalliburton Co.Shell Deepwater Development, Inc.Messer SE & Co. KGaA (Germany)Eni SpAConoco, Inc.ConocoPhillips
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.China National Petroleum Corp.Schlumberger Technologies, Inc.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.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.Shanghai Huahong Grace Semiconductor Manufacturing Corp.Halliburton Co.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.Saint-Gobain PAM Holding SAthyssenkrupp Steel Europe AGToyo Kohan Co., Ltd.Senju Metal Industry Co., Ltd.Usui International Industry Co., LtdVallourec Oil & Gas France SASCNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Nanjing Iron & Steel Co., Ltd.Heraeus Precious Metals GmbH & Co. KGWuhan Iron & Steel Group Corp.
Hitachi Construction Machinery Co., Ltd.Idemitsu Kosan Co., Ltd.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 SASUHuaneng Power International, Inc.Huainan Mining (Group) Co., Ltd.Sany Heavy Equipment Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Tokai Carbon Co., Ltd.Heilongjiang University of Science & TechnologyTata Steel Ltd.Guangdong Zhongnan Iron & Steel Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Vale SAChina Shenhua Coal to Liquid & Chemical Co., Ltd.SGIS Songshan Co., Ltd.Tiandi Science & Technology Co., Ltd.Phillips 66Tiandi Science & Technology Co., Ltd.Wengfu (Group) Co., Ltd.Baosteel Group Xinjiang Bayi Iron & Steel Co., Ltd.HuaDian Heavy Industries Co., Ltd.Hydril Co.Jinneng Holding Equipment Manufacturing Group Co. Ltd.
Sany Heavy Equipment Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Hydril Co.Hydril Co.Varco International, Inc.China Coal Beijing Coal Mining Machinery Co. Ltd.Rex Industries Co., Ltd.Tone Boring Co., Ltd.Bosun Co., Ltd.Shinhan Diamond Industrial Co., Ltd.Shinhan Diamond Industrial Co., Ltd.CONSEC CORP.MAN TAKRAF Frdertechnik GmbHMAN TAKRAF Frdertechnik GmbHFriedrich Duss Maschinenfabrik GmbH & Co. KGInterwell Norway ASNational Mine Service Co.Kelamayi Keli New Technology Industrial Development Co. Ltd.National Mine Service Co.Chengdu Ouxun Technology Co., Ltd.Boart Longyear, Inc.Petreco International, Inc.Minova Australia Pty Ltd.Henan Energy Chemical Group Heavy Equipment Co., Ltd.CLEANTEK Industries, Inc. /Old/Oilflow Solutions, Inc.Oilflow Solutions, Inc.Jiangxi Feilong Rock Bit Manufacture Co., Ltd.
Sany Heavy Equipment Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Joy Global Underground Mining LLCHydril Co.Hydril Co.Varco International, Inc.China Coal Beijing Coal Mining Machinery Co. Ltd.Tone Boring Co., Ltd.Astec Industries, Inc.Shanghai Jintai Engineering Machinery Co. Ltd.Shanghai Jintai Engineering Machinery Co. Ltd.MAN TAKRAF Frdertechnik GmbHMAN TAKRAF Frdertechnik GmbHDrillmec SpAInterwell Norway ASNational Mine Service Co.Kelamayi Keli New Technology Industrial Development Co. Ltd.National Mine Service Co.Morris Industries, Inc.Chengdu Ouxun Technology Co., Ltd.Boart Longyear, Inc.Nippon Kaiko Co., Ltd.Wuxi Jinfan Drilling Equipment Co., Ltd.Wuxi Jinfan Drilling Equipment Co., Ltd.Comacchio SrlPetreco International, Inc.Minova Australia Pty Ltd.Henan Energy Chemical Group Heavy Equipment Co., Ltd.
Hilti AGKoki Holdings Co., Ltd.Makita Corp.Snap-On, Inc.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.metabo AGFestool GmbHJoy Global Underground Mining LLCC.&E. Fein GmbHHydril Co.Hydril Co.Varco International, Inc.Robert Bosch Tool Corp.China Coal Beijing Coal Mining Machinery Co. Ltd.ABB Vetco Gray, Inc.Tone Boring Co., Ltd.Soosan Heavy Industries Co., Ltd.Unverferth Manufacturing Co., Inc.GSI Creos Corp.MAN TAKRAF Frdertechnik GmbHMAN TAKRAF Frdertechnik GmbHSukup Manufacturing Co.Sammic SlInterwell Norway ASDynabrade, Inc.National Mine Service Co.