Tunneling is what we pride of. Our working skill is and will stay on top of country; more than 1,000km tunnel have been done so far. We involved 6 of 10 extremely longest Tunnel (more than 12km long) in China. The first under sea tunnel in China under took by us and located in Xia Men was award a “locomotive medal” by national rail committee. The two longest railway tunnel in China we built is Qinlin tunnel (18.456km) and Wushaoling Tunnel (20.05km) was award top prize in China.