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Caterpillar, Inc.Daimler-Benz Aerospace AGNippon Steel Nisshin Co., Ltd.Koenig & Bauer AGChina Construction Eighth Engineering Division Corp. Ltd.Snamprogetti SpATaiheiyo Cement Corp.Kennametal, Inc.China Construction Second Engineering Bureau Co., Ltd.Services Petroliers Schlumberger SAChina Railway Siyuan Survey & Design Group Co., Ltd.United States Gypsum Co.United States Gypsum Co.Combustion Engineering, Inc.Powerchina Huadong Engineering Corp. Ltd.SMS group GmbHAlbemarle Corp.Doosan Enerbility Co., Ltd.China Construction Seventh Engineering Division Corp. Ltd.Graco, Inc.Shanghai Baoye Group Co., Ltd.Powerchina Huadong Engineering Corp. Ltd.The First Co. of China Eighth Engineering Bureau Ltd.Chiyoda Corp.Ahlstrom Machinery Corp.SINOPEC Engineering (Group) Co., Ltd.Korea Institute of Construction TechnologyTechnip France SASChina ENFI Engineering Corp.Qingdao HaiGao Design & Manufacturing Co. Ltd.
China State Construction Engineering Corp. Ltd.Chengdu Xinzhu Road & Bridge Machinery Co., Ltd.TianJin 712 Communication & Broadcasting Co., Ltd.Beijing Urban Construction Design & Development Grp Co., LtdChina Railway Hi-tech Industry Corp. Ltd.UniTTEC Co., Ltd.Hongrun Construction Group Co., Ltd.Hongrun Construction Group Co., Ltd.Beijing Tieke Shougang Railway-Tech Co. Ltd.Nanjing TYCHO Information Technology Co., Ltd.Nanjing TYCHO Information Technology Co., Ltd.Zhejiang Huatie Emergency Equipment Science & Tech Co., Ltd.Shanghai Fuxin Intelligent Transportation Solutions Co., Ltd.Shanghai Fuxin Intelligent Transportation Solutions Co., Ltd.Beijing Togest Automation System Equipment Co., Ltd.Beijing Togest Automation System Equipment Co., Ltd.Tianjin Metro Group Co., Ltd.Tongfang Technovator Int (Beijing) Co., Ltd.China High-Speed Railway Technology Co., Ltd.China High-Speed Railway Technology Co., Ltd.CRRC Corp. Ltd.Ningbo Construction Co., Ltd.Tianjin Line 3 Rail Transit Operation Co., Ltd.Hefei Urban Rail Transit Co. Ltd.Guiyang Urban Rail Transit Co., Ltd.Shandong Hi-Speed Road & Bridge Group Co., Ltd.
China 22MCC Group Co. Ltd.CCCC Fourth Highway Engineering Co., Ltd.Guangdong Provincial ChangDa Highway Engineering Co. Ltd.CCCC Second Highway Engineering Co., Ltd.China Highway Engineering Consulting Group Co. Ltd.Henan Province Highway Engineering Bureau Group Co., Ltd.Henan Communications Planning & Design Institute Co., Ltd.China Highway Engineering Consulting Group Co. Ltd.Anhui Construction Engineering Group Corp. Ltd.Shanghai Millennium City Planning Engineering Design Co., Ltd.Shanghai Millennium City Planning Engineering Design Co., Ltd.Fujian Jianzhong Construction Technology Co., Ltd.Shanghai Lande Highway Engineering Consult Design Co., Ltd.Jiangxi Green Giant Ecological Environment Co., Ltd.Jiangxi Green Giant Ecological Environment Co., Ltd.Shandong Luzhong Highway Engineering Construction Co. Ltd.Zhejiang Cosine Design Consulting Co., Ltd.Tibet Tianlu Co., Ltd.Sichuan Road & Bridge Co., Ltd.Guangdong Gaintop Highway Engineering Construction Group Co.Ningxia Highway Survey & Design Institute Co. Ltd.Ningxia Highway Survey & Design Institute Co. Ltd.Stantec, Inc.Jiangxi Jiahe Engineering Consulting Supervision Co., Ltd.Tianjin No. 6 Municipal & Highway Engineering Co., Ltd.
China Railway Jianzhu Group Co., Ltd.China 22MCC Group Co. Ltd.China Railway Engineering Equipment Group Co., Ltd.Japanese National RailwaysChina Railway Sixth Group Co. Ltd.Grupo Petrotemex SA de CVPandrol Ltd.British Railways BoardChina Railway Engineering Consulting Group Co., Ltd.West Japan Railway Co.Korea Railroad Corp.Deutsche Bahn AGChina Railway Engineering Machinery Rsch & Design InstituteThe Kinki Sharyo Co., Ltd.Shenhua Railway Freight Transport Co., Ltd.Shenhua Railway Freight Transport Co., Ltd.CRRC Taiyuan Co., Ltd.China Railway Hi-tech Industry Corp. Ltd.Escorts Kubota Ltd.DB Netz AGDellner Couplers ABUniTTEC Co., Ltd.China Railway 23rd Bureau Group Co., Ltd.China Railway 23rd Bureau Group Co., Ltd.China CNR CorporationChina CNR Corp. Ltd.Chengdu Tangyuan Electric Co., Ltd.Chengdu Tangyuan Electric Co., Ltd.Norfolk Southern Railway Co.Gatekeeper Systems, Inc.
Shandong Hi-Speed Group Co., Ltd.Magnetic Autocontrol GmbHChina Railway Erju 4th Engineering Co. Ltd.China Railway Erju 4th Engineering Co. Ltd.Nedap NVSan Miguel Corp.Grupo Dragados SAJiangxi Ganyue Expressway Co., Ltd.CAME SpA (Vicenza)Hangzhou Gouyi Expressway & Bridge Management Co., Ltd.Shaanxi Provincial Communication Construction Group Corp.Shaanxi Provincial Communication Construction Group Corp.Henan Zhongyuan Expressway Co., Ltd.Henan Zhongyuan Expressway Co., Ltd.Zhejiang Wenzhou Yongtaiwen Expressway Co. Ltd.Zhejiang Jinhua Yongjin Expressway Co., Ltd.Jiangsu Expressway Co. Ltd.Zhejiang Jinhua Yongjin Expressway Co., Ltd.Anhui Expressway Co., Ltd.Ningbo China Merchants Highway Transportation Tech Co., Ltd.Heilongjiang Transport Development Co., Ltd.China Merchants Loscam (Asia Pacific) Co., Ltd.Shenzhen Expressway Corp. Ltd.Ningbo China Merchants Highway Transportation Tech Co., Ltd.China Merchants Loscam (Asia Pacific) Co., Ltd.Shenzhen Expressway Corp. Ltd.Ferrovial SA