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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.
Samsung Heavy Industries Co., Ltd.DAEWOO SHIPBUILDING & MARINE ENGINEERING Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Halliburton Co.Petróleo Brasileiro SAChina Oilfield Services Ltd.Vetco Gray, Inc.Varco International, Inc.Oceaneering International, Inc.Vallourec SADril-Quip, Inc.National-Oilwell, Inc.Yantai CIMC Raffles Offshore Ltd.Transocean Sedco Forex Ventures Ltd.Bluewater Energy Services BVScientific Drilling International, Inc.Twister BVTrican Well Service Ltd.Anadarko Petroleum Corp.Maersk Drilling A/SInnovex Downhole Solutions, Inc.Valaris PlcBergstrom, Inc.Centek Ltd.Worldwide Oilfield Machine, Inc.MODEC, Inc.Japan Drilling Co., Ltd.Stena Drilling Ltd.Calfrac Well Services Ltd.
Messer SE & Co. KGaA (Germany)SMS group GmbHDürr Systems GmbHCentral Research Institute of Bldg & Construction Co., Ltd.Central Research Institute of Bldg & Construction Co., Ltd.Corning Precision Materials Korea Co., Ltd.Beijing GeoEnviron Engineering & Technology, Inc.Beijing GeoEnviron Engineering & Technology, Inc.Nidec GPM GmbHJA Solar Holdings Co., Ltd.New Energy & Industrial Technology Development OrganizationWuxi Xuelang Environmental Technology Co., Ltd.Wuxi Xuelang Environmental Technology Co., Ltd.Shenwu Environmental Technology Co., Ltd.Shenwu Environmental Technology Co., Ltd.Weber-Hydraulik GmbHMitsubishi Hitachi Power Systems Europe Ltd.Kemflo (Nanjing) Environmental Technology Co. Ltd.Xi'an Huajiang Environmental Technology Co., Ltd.BCEG Environmental Remediation Co., Ltd.BCEG Environmental Remediation Co., Ltd.Kemflo (Nanjing) Environmental Technology Co. Ltd.Suzhou Shijing Environmental Technology Co., Ltd.Nanjing Wondux Environmental Protection Technology Corp. Ltd..Nanjing Wondux Environmental Protection Technology Corp. Ltd..Suzlon Energy Ltd.Schletter GmbHJG Environmental Technology Co., Ltd.JG Environmental Technology Co., Ltd.Hepu Energy Environmental Technology Co., Ltd.
Technip France SASVetco Gray, Inc.BL Technology, Inc.Korea Shipbuilding & Offshore Engineering Co., Ltd.Korea Shipbuilding & Offshore Engineering Co., Ltd.Oceaneering International, Inc.Dril-Quip, Inc.Telstra Corp. Ltd.Telstra Ltd.National Coupling Co., Inc.SubCom LLCSubsea 7 Norway ASHeerema Marine Contractors Nederland SEEvotec ASCOOEC Subsea Technology Co., Ltd.Subsea Technologies Group Ltd.Sensor Highway Ltd.Wfs Technologies Ltd.Fugro NVSuzhou Douson Drilling & Production Equipment Co., Ltd.Soil Machine Dynamics Ltd.Hydroacoustics, Inc.Xtera Communications, Inc.Nanjing Develop Advanced Manufacturing Co., Ltd.Nanjing Develop Advanced Manufacturing Co., Ltd.Suzhou Douson Drilling & Production Equipment Co., Ltd.Neptune Subsea IP Ltd.Allseas Group SAMagma Global Ltd.MSP/DRILEX (Shanghai) Co., Ltd.