中國中鐵四局集團有限公司是具有綜合施工能力的大型建筑企業，是世界 500 強企業——中國中鐵股份有限公司的標桿企業，持有鐵路工程施工總承包特級資質，房屋建筑工程施工總承包特級資質及建筑行業甲級設計資質，公路、市政、機電安裝工程施工總承包一級資質，橋梁、隧道、公路路基、公路路面、鐵路鋪軌架梁、鐵路電務、電氣化工程專業一級資質，電信工程、建筑裝修裝飾工程、消防設施工程、水工隧洞、鋼結構工程等專業承包一級資質，公路交通工程、城市軌道交通工程專業承包資質，水利水電總承包二級資質；鋼結構設計甲級資質，環保工程、地質災害治理工程甲級資質，鐵道行業甲（Ⅱ）級、建筑行業甲級設計資質。同時，公司還擁有國外工程承包資質和對外經營權。除基礎設施工程施工外，公司業務范圍還包括建筑勘察設計、新型材料制造、鐵路運營服務、大型施工機械租賃、設備及材料出口、房地產開發、國家基礎建設投資、交通園林、國際旅游等多個領域。 成立六十多年來，公司先后參與新建、改擴建了 100 多條鐵路干、支線和專用線，建成大型鐵路樞紐 10 余個，并在高速公路、市政、水利水務、汽車試驗場、城市軌道交通、工業與民用建筑、電氣化工程等施工領域取得輝煌業績和卓著信譽。同時，公司積極參與國際市場競爭，在 20 多個國家和地區完成或正在施工鐵路、公路、房建、水利等工程百余項。所建工程中，先后有 19 項獲中國建設工程魯班獎（國家優質工程）； 23 項獲中國土木工程詹天佑獎；19 項被評為全國用戶滿意建筑工程；13 項被評為國家市政金杯示范工程；30 項被評為全國優秀焊接工程；19 項獲中國建筑鋼結構金獎；21 項榮獲國家優質工程獎；200 余項獲省部級優質工程獎；10 項成果榮獲國家級科技進步獎，214 項成果榮獲省部級與行業科技進步獎；所編制的工法中，10 項被評定為國家級工法， 209 項被評定為省部級工法。公司現有國家授權專利 454 項、著作權 5 項，發明專利 108 項。 公司為國家級高新技術企業，并建有國家級企業技術中心和博士后工作站。目前，公司現有員工 22400 余名，包括各類專業技術人員 13500 余人，各類技術工人 7600 余人。其中，具有高中級技術職稱的專業技術人員 1260 人（包括 10 名專家享受國家特殊津貼）。目前，公司擁有各類先進機械設備 9800 余臺（套），總功率達 109 萬千瓦。其中，用于鐵路客運專線重型橋梁制、運、架及軌道生產、鋪設，城市地鐵區間施工，高速公路路面施工的大型設備近二百套（臺）。由于卓越的管理和良好的信譽，公司成為自鐵道部 2005 年開展鐵路信用評價以來，是近百家鐵路施工企業中獲得 A 類企業次數最多的單位，獲得銀行授信額度 499 億元；多次榮獲“全國優秀施工企業”稱號和“全國五一勞動獎狀”，先后被評為“全國文明單位”、“全國重合同守信用企業”、“全國工程建設質量管理優秀企業”、“全國建筑科技進步與技術創新先進單位”、“全國思想政治工作優秀企業”、 “中國企業形象管理典范單位”、“全國模范勞動關系和諧企業”。 China Tiesiju Civil Engineering Group Co., Ltd. (hereinafter referred to as CTCE) is not only a large construction enterprise but also a benchmarking enterprise of China Railway Group Limited. It has obtained Special-Class qualifications for the general construction contracting of railway works; Class I qualifications for the general construction contracting of highways, municipal services, housing construction and mechanical & electrical installation works; Class I qualifications for such specialties as bridges, tunnels, highway subgrade, highway pavements, railway track laying, bridge erection and railway electricity & electrification works; Class I qualifications for the specialized contracting of communications works, building decoration works, fire control facility works, hydraulic tunnel works, steel structure works and so on; qualifications for the specialized contracting of highway traffic works and urban rail transit works; Class II qualifications for the EPC of water conservancy and hydropower; a Class A qualification for steel structure design; Class A qualifications for environmental protection works and prevention & control works of geological hazards; a Class A (II) qualification for the railway industry and a Class A qualification for design in the construction industry. In addition, CTCE also possesses qualifications for foreign project contracting and external management rights. Besides infrastructure construction, the Company's business scope embraces a variety of fields such as building survey & design, new material manufacturing, railway operation services, large construction machinery leasing, equipment and materials export, real estate development, national infrastructure construction & investment, traffic gardens and international tourism. In the past 60 years since it was founded, CTCE has participated in more than 100 newly-built, renovated and extended trunk railway lines, branch railway lines and special railway lines, completed more than 10 large railway hubs, made outstanding achievements and gained a distinguished reputation in such construction fields as expressways, municipal services, water conservancy & water affairs, automotive proving grounds, urban rail transit, industrial and civil buildings, electrification works and more. Furthermore, CTCE takes an active part in international market competition with over 100 railway, highway, house construction and water conservancy projects completed or under construction in more than 20 countries or regions. Among these projects, 19 projects won the Luban Award for Chinese Construction Projects (National Prime-Quality Projects); 23 projects won the Zhan Tianyou Awards for China Civil Engineering; 19 projects were rated as National Customer Satisfaction Construction Projects; 13 projects were rated as Demonstration Projects in the Nation-Wide Municipal Golden Cup; 30 projects were rated as National Excellent Welding Projects; 19 projects won the Gold Award for Chinese Steel Structure Construction, 21 projects won the Award for National Prime-quality Projects and over 200 projects won the Award for Provincial/Ministerial-Level Prime-Quality Projects. In addition, 10 CTCE achievements won the Award for National Scientific and Technological Progress and 214 achievements won the Award for Provincial/Ministerial-Level and Industrial Scientific and Technological Progress. Among the construction methods compiled by CTCE, 10 methods have been rated as National Grade Normalized Construction Methods and 209 methods have been rated as Provincial/Ministerial Grade Normalized Construction Methods. At present, CTCE possesses 454 state-authorized patents and 5 copyrights, including 108 patents for invention. CTCE is a national hi-tech enterprise that has established a national enterprise technology center and a postdoctoral workstation. So far, CTCE has 22,400 employees including over 13,500 professionals and 7,600 skilled workers. Among them, there are 1,260 professionals with medium or senior technical titles (including 10 experts enjoying special national allowances). CTCE owns more than 9,800 (sets) advanced mechanical equipment , with a total power of up to 1.09 GW, among which nearly 200 sets are used for the manufacturing, transportation and erection of heavy-duty bridges and the production & laying of railway tracks along railway PDLs, as well as the construction of urban subway running sections and expressway pavement. Due to its excellent management and good reputation, CTCE has become the sole one out of nearly one hundred railway construction companies to be consecutively listed among Class A enterprises since the railway credit evaluation was carried out by the Ministry of Railways in 2005, and has obtained a line of bank credit amounting to RMB 49.9 billion. In addition, CTCE has been repeatedly awarded the title of 'National Excellent Construction Enterprise' and the 'National May Day Labor Diploma' and has been named a 'National Civilized Unit', a 'Contract-Observing and Trustworthy Enterprise', a 'National Excellent Enterprise for Construction Quality Management', a 'National Advanced Unit in Building Technology Progress and Technical Innovation', a 'National Excellent Enterprise in Ideological & Political Work', a 'Model Unit for Corporate Image Management of China' and a 'National Model Enterprise with Harmonious Labor Relations'.