- HOCHTIEF AG, Essen, Germany†
- Grupo ACS, Madrid, Spain†
- VINCI, Rueil-Malmaison, France†
- STRABAG SE, Vienna, Austria†
- Bechtel, San Francisco, Calif., U.S.A.†
- Saipem, San Donato Milanese (Milan), Italy†
- Fluor Corp., Irving, Texas, U.S.A.†
- BOUYGUES, Paris, France†
- Skanska AB, Solna, Sweden†
- China Communications Construction Group Ltd., Beijing, China†
- TECHNIP, Paris, France†
- FCC, Fomento de Constr. y Contratas SA, Madrid, Spain†
- Construtora Norberto Odebrecht, Sao Paulo, SP, Brazil†
- Bilfinger Berger SE, Mannheim, Germany
- Samsung Engineering Co. Ltd., Seoul, S. Korea†
- Balfour Beatty plc, London, U.K.†
- Consolidated Contractors Group, Athens, Greece†
- KBR, Houston, Texas, U.S.A.†
- Royal BAM Group nv, Bunnik, The Netherlands†
- Petrofac Ltd., Jersey, Channel Islands, U.K.†
- OHL SA (Obrascon Huarte Lain SA), Madrid, Spain†
- China State Construction Eng’g Corp. Ltd., Beijing, China†
- Sinohydro Group Ltd., Beijing, China†
- China National Machinery Industry Corp., Beijing, China†
- Hyundai Engineering & Construction Co. Ltd., Seoul, S. Korea
- Abeinsa SA, Seville, Spain†
- PCL Construction Enterprises Inc., Denver, Colo., U.S.A.†
- Leighton Holdings Ltd., St. Leonards, NSW, Australia†
- JGC Corp., Yokohama, Japan†
- China Railway Construction Corp. Ltd., Beijing, China†
- Foster Wheeler AG, Hampton, N.J., U.S.A.†
- GS Engineering & Construction Corp., Seoul, S. Korea†
- Tecnicas Reunidas, Madrid, Spain†
- McDermott International Inc., Houston, Texas, U.S.A.
- CB&I, The Woodlands, Texas, U.S.A.†
- Maire Tecnimont, Rome, Italy†
- Techint Group, Milan, Italy†
- Lend Lease Group, Millers Point, NSW, Australia†
- China Railway Group Ltd., Beijing, China†
- Daelim Industrial Co. Ltd., Seoul, S. Korea†
- Danieli & C. O.M. SpA, Buttrio, Italy†
- China Metallurgical Group Corp., Beijing, China†
- Kiewit Corp., Omaha, Neb., U.S.A.†
- Kajima Corp., Tokyo, Japan†
- SK Engineering & Construction Co. Ltd., Seoul, S. Korea†
- CITIC Construction Co. Ltd., Beijing, China
- Grupo Isolux Corsan SA, Madrid, Spain†
- China Petroleum Eng’g & Construction Corp., Beijing, China†
- IMPREGILO SpA, Milan, Italy†
- Daewoo E&C Co. Ltd., Seoul, S. Korea†
- Obayashi Corp., Tokyo, Japan†
- Jan De Nul Group (Sofidra SA), Capellen, Luxembourg†
- SEPCOIII Electric Power Construction Corp., Qing Dao, China
- Acciona Infraestructuras, Madrid, Spain†
- Sacyr Vallehermoso, Madrid, Spain†
- Polimeks Insaat Taahhut ve San Tic. AS, Istanbul, Turkey
- Van Oord, Rotterdam, The Netherlands†
- Larsen & Toubro Ltd., Mumbai, India†
- Astaldi SpA, Rome, Italy†
- Taisei Corp., Tokyo, Japan†
- Jacobs, Pasadena, Calif., U.S.A.
- China Gezhouba Group Co. Ltd., Wuhan, Hubei, China†
- Samsung C&T Corp., Seoul, S. Korea†
- SEPCO Electric Power Constr. Corp., Jinan, Shandong, China†
- Kharafi National KSCC, Safat, Kuwait†
- POSCO Engineering & Construction, Incheon, S. Korea
- Shanghai Electric Group Co. Ltd., Shanghai, China†
- SNC-Lavalin International Inc., Montreal, Quebec, Canada†
- Chiyoda Corp., Yokohama, Japan
- Joannou & Paraskevaides Group of Cos., Guernsey, U.K.
- Salini Costruttori SpA, Rome, Italy†
- Toyo Engineering Corp., Chiba, Japan†
- A. Porr AG, Vienna, Austria
- Takenaka Corp., Osaka, Japan†
- Arabian Construction Co. SAL, Beirut, Lebanon†
- Construtora Andrade Gutierrez SA, Belo Horizonte, MG, Brazil†
- China National Chemical Eng’g Group Corp., Beijing, China†
- BESIX SA, Brussels, Belgium†
- Punj Lloyd Ltd., Gurgaon, Haryana, India†
- Shimizu Corp., Tokyo, Japan†
- Renaissance Construction, Ankara, Turkey†
- Ed. Zublin AG, Stuttgart, Germany†
- Dongfang Electric Corp., Chengdu, Sichuan, China†
- Metka, Maroussi, Athens, Greece†
- COMSA EMTE, Madrid, Spain†
- Shanghai Construction Group, Shanghai, China
- Penta-Ocean Construction Co. Ltd., Tokyo, Japan
- Tekfen Construction and Installation Co. Inc., Istanbul, Turkey†
- China General Technology (Group) Holding Ltd., Beijing, China†
- Taikisha Ltd., Tokyo, Japan†
- China Civil Engineering Constr. Corp., Beijing, China†
- China Int’l Water & Electric Corp. (CWE), Beijing, China†
- CGC Overseas Construction Group Co. Ltd., Beijing, China†
- GAMA, Ankara, Turkey†
- Enka Construction & Industry Co. Inc., Istanbul, Turkey†
- Veidekke ASA, Oslo, Norway†
- Harbin Electric International Co. Ltd., Harbin, China
- John Sisk & Son Ltd., Dublin, Leinster, Ireland†
- Zhongyuan Petroleum Exploration Bureau, Puyang City, China†
- ANT YAPI Construction, Industry & Trade Co., Istanbul, Turkey†
- Hanwha Engineering & Construction Corp., Seoul, S. Korea†
- The Arab Contractors (O.A.O. & Co.), Cairo, Egypt†
- Ghella SpA, Rome, Italy†
- Qingjian Group Co. Ltd., Qingdao, Shandong, China†
- Soares Da Costa - Grupo SGPS, Porto, Portugal†
- TAV Construction, Istanbul, Turkey
- Bonatti SpA, Parma, Italy†
- WorleyParsons Ltd., North Sydney, NSW, Australia†
- McConnell Dowell Corp. Ltd., Hawthorn, Victoria, Australia†
- ABB SpA - Process Automation Division, Sesto San Giovanni, Italy†
- Orascom Construction Industries (OCI), Cairo, Egypt†
- Bauer AG, Schrobenhausen, Germany†
- Iberdrola IngenierIa y Construcciõn, Madrid, Spain†
- Sinopec Engineering Inc., Beijing, China
- Contracting & Trading Co. C.A.T. Group of Cos., Beirut, Lebanon†
- CTCI Corp., Taipei, Taiwan†
- China Jiangsu Int’l Econ.-Tech. Coop. Corp., Nanjing, China†
- Black & Veatch, Overland Park, Kan., U.S.A.†
- Trevi Finanziaria Industriale SpA, Cesena, Italy†
- Yuksel Insaat Co. Inc., Ankara, Turkey†
- C.M.C. di Ravenna, Ravenna, Italy†
- OAS SA, Sao Paulo, SP, Brazil†
- China Petroleum Pipeline Bureau, Langfang City, Hebei, China†
- Dia Holding FZCO, Dubai, U.A.E.
- China Wanbao Engineering Corp., Beijing, China
- Per Aarsleff A/S, Aabyhoej, Denmark†
- China Geo-Engineering Corp., Beijing, China†
- Nishimatsu Construction Co. Ltd., Tokyo, Japan†
- Calik Enerji Sanayi Ve Ticaret AS, Istanbul, Turkey†
- Impresa Pizzarotti & C. SpA, Parma, Italy†
- China Dalian Int’l Eco. & Techn. Coop. Group Co., Dalian, China†
- Cengiz Construction Industry & Trade Co. Inc., Istanbul, Turkey†
- E. Pihl & SØn AS, Kongens Lyngby, Denmark†
- Ssangyong Engineering & Construction Co. Ltd., Seoul, S. Korea†
- Alarko Contracting Group, Gebze/Kocaeli, Turkey
- Onur Taahhut Ticaret Ltd. Stl., Ankara, Turkey†
- The Babcock & Wilcox Co., Charlotte, N.C., U.S.A.†
- Habtoor Leighton Group, Dubai, U.A.E.†
- Bentini SpA, Faenza, Italy†
- Societa Italiana Per Condotte D’Acqua SpA, Rome, Italy†
- Anhui Foreign Economic Construction Co., Hefei, Anhui, China
- MAPA Insaat ve Ticaret AS, Ankara, Turkey
- Yapi Merkezi Insaat ve Sanayi AS, Istanbul, Turkey†
- ECC, Burlingame, Calif., U.S.A.†
- Shenyang Yuanda Aluminum Indus. Eng’g Co., Shenyang, China
- Beijing Construction Eng’g Group Co. Ltd., Beijing, China†
- B.L. Harbert International LLC, Birmingham, Ala., U.S.A.
- Nata Construction Tourism Trade & Industry, Ankara, Turkey†
- National Petroleum Construction Co. (NPCC), Abu Dhabi, U.A.E.
- Ircon International Ltd., New Delhi, Delhi, India
- China Henan Int’l Coop. Group Co. Ltd., Zhengzhou, Henan, China
- Lakeshore TolTest Corp., Detroit, Mich., U.S.A.†
- Shapoorji Pallonji & Co. Ltd., Mumbai, Maharashtra, India†
- Nurol Construction and Trading Co., Ankara, Turkey†
- China Zhongyuan Engineering Corp., Beijing, China
- Rizzani de Eccher SpA, Pozzuolo del Friuli (UD), Italy†
- Xinjiang Beixin Construction & Eng’g Co., Urumqi, Xinjiang, China†
- Petroleum Projects & Technical Consultations, Cairo, Egypt†
- China Jiangxi Corp. For Int’l Eco. & Tech. Coop., Nanchang, China†
- Kayi Insaat San. ve Tic. AS, Istanbul, Turkey†
- The Shaw Group Inc., Baton Rouge, La., U.S.A.
- Tepe Insaat Sanayi A.S., Ankara, Turkey†
- Doosan Engineering & Construction Co. Ltd., Seoul, S. Korea
- China Wu Yi Co. Ltd., Fuzhou, Fujian, China†
- GAP Insaat Yatirim ve Dis Ticaret AS, Istanbul, Turkey†
- Pan-China Construction Group Co. Ltd., Beijing, China†
- Construcoes e Comercio Camargo Correa SA, Sao Paulo, Brazil†
- IC Ibrahim Cecen Investment Holding Inc., Ankara, Turkey†
- China HuanQiu Contracting & Engineering Corp., Beijing, China†
- POSCO Engineering Co., Seongnam City, S. Korea†
- Anhui Construction Eng'g Group Co. Ltd., Hefei, Anhui, China†
- Sumitomo Mitsui Construction Co. Ltd., Tokyo, Japan†
- Metag Insaat Ticaret AS, Ankara, Turkey
- SICIM SpA, Busseto (PR), Italy†
- Rasen Insaat Ve Yatirim Ticaret AS, Istanbul, Turkey†
- AMEC plc, London, U.K.†
- Grupo SANJOSE SA, Tres Cantos, Madrid, Spain†
- Dogus Insaat ve Ticaret AS, Istanbul, Turkey†
- Yenigun Construction Inc., Ankara, Turkey
- PJSC Stroytransgaz, Moscow, Russia†
- Limak Insaat Sanayi ve Ticaret AS, Ankara, Turkey
- Sener Ingenieria y Sistemas SA, Las Arenas (Getxo), Vizcaya, Spain†
- ELLAKTOR SA, Kifissia, Greece†
- Zhongmei Engineering Group Ltd., Nanchang, Jiangxi, China
- Kinden Corp., Tokyo, Japan†
- Aecon Group Inc., Toronto, Ontario, Canada†
- Arabtec Construction LLC, Dubai, U.A.E.†
- Prezioso Technilor, Vienne, France†
- Graham Group Ltd., Calgary, Alberta, Canada
- Zhongding Int’l Engineering Co. Ltd., Nanchang, Jiangxi, China†
- TACA Construction Inc., Levent, Istanbul, Turkey
- CH2M HILL, Englewood, Colo., U.S.A.†
- Summa Turizm Yatirimciligi AS, Ankara, Turkey†
- URS Corp., San Francisco, Calif., U.S.A.†
- Zhejiang Constr. Invest. Group Co. Ltd., Hangzhou, Zhejiang, China†
- Toda Corp., Tokyo, Japan†
- Alberici Corp., St. Louis, Mo., U.S.A.†
- Eser Contracting and Industry Co. Inc., Ankara, Turkey†
- China National Electronics Imp. & Exp. Corp., Beijing, China
- Willbros Group Inc., Houston, Texas, U.S.A.†
- STFA Construction Group, Istanbul, Turkey
- Atlas Group, Ankara, Turkey†
- China Petroleum Pipeline Eng’g Corp., Langfang City, Hebei, China
- Layne Christensen Co., Mission Woods, Kan., U.S.A.†
- Jiangsu Nantong No. 3 Constr. Grp. Co., Haimen, Jiangsu, China†
- IREM Group, Siracusa, Italy†
- Mortenson Construction, Minneapolis, Minn., U.S.A.
- China Yunan Constr. Eng'g Group Co. Ltd., Kunming, Yunnan, China†
- Nantong Constr. Group Joint-Stock Co., Nantong, Jiangsu, China†
- Electra LTD., Ramat Gan, Israel†
- Beta Tek Insaat, Istanbul, Turkey†
- Renco SpA, Pesaro, Italy†
- Kontek Construction, Istanbul, Turkey
- MAKYOL Constr. Indus. Tourism & Trading Inc., Istanbul, Turkey†
- Jiangsu Nantong Liujian Constr. Grp. Co., Rugao, Jiangsu, China†
- M/s. Afcons Infrastructure Ltd., Mumbai, Maharashtra, India
- Tutor Perini Corp., Sylmar, Calif., U.S.A.†
- Ingenium International Inc., Detroit, Mich., U.S.A.†
- Sinosteel Equipment & Engineering Co. Ltd., Beijing, China
- The Lauren Corp., Abilene, Texas, U.S.A.†
- Sinopec Shanghai Engineering Co. Ltd., Shanghai, China
- Energoprojekt Holding plc, Belgrade, Serbia†
- MWH Global, Broomfield, Colo., U.S.A.†
- Caddell Construction Co. Inc., Montgomery, Ala., U.S.A.
- Weihai International Eco. & Tech. Coop. Co. Ltd., Weihai, China†