... Al,Harden steel.. Process:Milling,Stamping.. 2013 Chinese high precision sheet metal stamping part for car1. Product & Processing ability ... alloy,Aluminum, Aluminum alloy,harden metal etc.Processstamping,turning,punching,drilling,welding,die-casting, milling etc.Surface-treatmentplating( ... process and final inspection.5) Best OEM service, high quality, fast delivery. 3.Other trade terms Delivery : ...