China Railway Tunnel Co., Ltd., established on 2001-05-08, Business scope includes municipal public works construction,Highway construction,Mechanical and electrical installation engineering construction general contracting;Fire facilities engineering,bridge engineering,tunnel Engineering,Road subgrade engineering,Professional contracting of urban rail transit engineering;construction machinery(Tunnel special equipment,Tunnel full face boring machine,Shield and supporting products),Electrical Equipment,Mining Equipment,Green facilities,crane design,manufacture,Sales,leasing business;Tunnel full face boring machine,Shield cutter and other accessories manufacturing,wholesale,Sales;Prefabricated building,prefabricated building,steel structure design,manufacture,Sales,Install,lease;Technical Services,consultation service;Civil engineering building inspection and testing;Metal Products Wholesale;Sales of asphalt and its products;Wholesale of rubber products;concrete sales;Wholesale of petroleum products(Refined oil,Excluding hazardous chemicals);Plastic Products Wholesale;Labor protection supplies wholesale;trade agent;paint wholesale;fuel oil sales(Does not contain refined oil);lubricant production,wholesale,Sales;Wholesale of chemical products(Excluding hazardous chemicals);building materials,Decoration materials wholesale;Commodity wholesale trade(Except for licensed and approved products);Wholesale of Resin and Resin Products;Steel Wholesale;Wholesale of forestry products;Bridge expansion device sales;electric wire,cable wholesale;Wholesale of hardware products;Sales of electrical fittings;Wholesale of non-metallic minerals and products(Except for state exclusive control);textile,Wholesale of knitted goods and raw materials;Construction labor subcontracting;Self-operated and agent import and export business of commodities and technologies(Except for commodities and technologies that the state restricts the company to operate or prohibits the import and export of).