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Dresser Industries, Inc.Dresser Industries, Inc.Petrolite Corp.Camco International, Inc.Weatherford U.S. LPGuizhou Gaofeng Petroleum Machinery Co., Ltd.Thermax Ltd.Baker Hughes ESP, Inc.U.S. Well Services LLCUfa State Petroleum Technological UniversityShengli Oil Field Shengli Power Machinery Co. Ltd.Lubrizol Oilfield Solutions, Inc.Gulf Canada Resources Ltd.The Petroleum Oil & Gas Corporation of South Africa (Pty) Ltd.Essef Corp.Teleco Oilfield Services, Inc.Essef Corp.Enpro Subsea Ltd.Fracmaster Ltd.AVA International CorpShengli Petroleum Administrative BureauTuboscope Vetco International, Inc.Tuboscope Vetco International, Inc.Technip SAAbrado, Inc.POM, Inc.HYUNDAI Corp.Weatherford Canada Ltd.Control Flow, Inc.Shengli Oil Field Dongsheng Precision Petroleum Dev Co., Ltd.
Daimler-Benz Aerospace AGFried. Krupp GmbHGebrueder SulzerNippon Steel Nisshin Co., Ltd.LIXIL Corp. /Old/Koenig & Bauer AGKoenig & Bauer AGTaiheiyo Cement Corp.Snamprogetti SpAKennametal, Inc.China Construction Eighth Engineering Division Corp. Ltd.China Construction Second Engineering Bureau Co., Ltd.United States Gypsum Co.China Railway Siyuan Survey & Design Group Co., Ltd.United States Gypsum Co.Combustion Engineering, Inc.Primetals Asset Management U.K. Ltd.Saint-Gobain TM KKAlbemarle Corp.Johns Manville Corp.Powerchina Huadong Engineering Corp. Ltd.Powerchina Huadong Engineering Corp. Ltd.Shanghai Baoye Group Co., Ltd.Graco, Inc.China Construction Seventh Engineering Division Corp. Ltd.SMS group GmbHKorea Institute of Construction TechnologyThe First Co. of China Eighth Engineering Bureau Ltd.RHI Magnesita Deutschland AGTechnip France SAS
