Clamp ISO9001:2000 Approved Process: precision casting &Tooling Standard: JIS, DIN, ... the Qingdao harbor port and the airport. we can offer Clamp according to your requirement1.ISO9001:2000 Approved 2.OEM service ... steel,non-ferrous,grey iron,ductile cast iron and so on 4.Process: lost wax process, soluble glass process , silicon process ...