... :alumium,alloy,and so on surface:polish die casting part Materials:aluminum alloy Surface finish:polish, epoxy powder coat ... and zinc.1. Aluminum casting, sand casting, die casting part, gravity, high pressure die casting, low pressure die casting ... Precision machining: CNC, milling machine, drilling machine, numerical lathe, all types of lathe.4. Surface finish process: polishing, sand blasting, heat ...