HNCDI is mainly engaged in mountainous, urbanand underwater tunnel works in highway andmunicipal sectors, geotechnical engineering workssuch as highwalls and foundation pits, andplanning, design and consulting of undergroundengineering works such as underground parkinglots and underground shopping malls. Highwaysand tunnels of various classes completed add up to636km in total, including 154km of superlongtunnels and 5 underwater shield tunnels. HNCDIhas won 14 national and provincial awards inscientific and technological progress and excellentdesign. Besides, HNCDI has 23 national patents,including 12 patents for invention.
