... ,Tin...),Powder,Heat treatment,phosphating;4) Standard/specification: OEM service as per customers' requests,with in-house tooling ... , riveting,cutting,punching,drilling,turning,milling,grinding,rolling,cold drawing, spinning, forging, etc.MaterialAluminum, copper, brass, stainless steel, steel, ... and sincere services. The main materials we use are all high level in the domestic . Our products have ...