... maintenance 3.Advanced equipments and infrastructure Leakproof grab1.The leakless grab uses two forms generally leakage-proof structures, one kind is ... .We can supply a lot of kinds grab bucket used on port,dock,marione,steel factory for crab the goods and so on ... widely used in power plants,goods yeard,workshop,wharf to grab loosematerial, rubbish, scrap iron,etc.NOTE:please show these informaions ...