China Railway Seventh Group Corporation(CRSG), a large authorised state-hold enterprise, was founded by China Railway Engineering Corporation for the purpose of optimizing its strategic market layout. The main business scope of the company contains the following aspects: civil works construction of roads, railways, bridges, tunnels, houses, civil transport systems, hydroelectrical works and works tendered for domestically and internationally, the importation and exportation of equipment and materials for the above-mentioned projects, labor sevices, the erection of piping systems and the installation of equipment, manufacturing of reinforced concrete members and prefabricated members, selling of housing construction materials, leasing of houses, machineries and spare places, fabrication and maintenance of machinery and equipment and manufacturing and testing of electrification devices.