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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.JSWChina General Nuclear Power Corp.Duksan 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.ConocoPhillipsSinopec Oilfield Service Corp.SK Innovation Co., Ltd.Elf Aquitaine Fertilisants
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.China National Petroleum Corp.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.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.thyssenkrupp Steel Europe AGToyo Kohan Co., Ltd.Senju Metal Industry Co., Ltd.Usui International Industry Co., LtdCNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Wuhan Iron & Steel Group Corp.Nanjing Iron & Steel Co., Ltd.Shell Canada Ltd.Nippon Steel Metal Products Co., LtdSanyo Special Steel Co., Ltd.National Oilwell Varco LPW.C. Heraeus GmbH
Samsung Heavy Industries Co., Ltd.Hanwha Ocean Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Halliburton Co.Petróleo Brasileiro SASaipem SpAChina Oilfield Services Ltd.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.Shengli Petroleum Administrative BureauDrillmec SpAWorldwide Oilfield Machine, Inc.Centek Ltd.MODEC, Inc.Japan Drilling Co., Ltd.
Technip France SASSaipem SpABL 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.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.MSP/DRILEX (Shanghai) Co., Ltd.