Grab bucket dredger can excavate all kinds of silt, gravel and other materials on the bottom of the sea.It is widely used in dredging ship channel, wharf construction and seabed excavation engineering.At present, this kind of large equipment is completely dependent on Japanese imports, which seriously restricts the development of inland river and Marine construction in China. In order to break the Japanese technology blockade, the state has set up 863 Grab Bucket dredger project, which is jointly completely by our company and Wuhan University of Technology.