Qingdao Hengda Engineering(HD) is one of the leading manufacturersof materialhandling machines in China. We are design, development andproduction, alsosupply related spare parts.Our strengths is rope drive, products covers clamshell grabs,orange peel grabs,wireless remote control grabs, dredging grabs and some otherspecial models.Especially for our dredging grabs, we do No. 1 in domestic marketfor its designand waterproof treatment, and we have our own heat treatmenttechnology,to make our spare parts wear-resisting and corrosion-resisting.One of our biggest advantages of the after-sales service is, thatwe also repairgrabs from other brands. This service is well known and appreciatedby our customers.