... maintenance 3.Advanced equipments and infrastructure Leakproof grab1.The leakless grab uses two forms generally leakage-proof structures, one kind ... vacuum casting by our Group,top quality control3.Wheels,wirerope drum,gears, couplings are processed by our CNC manchine center, ... widely used in power plants,goods yeard,workshop,wharf to grab loosematerial, rubbish, scrap iron,etc.NOTE:please show these ...