... steel, iron, grey iron, ductile iron, copper, zinc, aluminum, brass, bronze, aluminum alloy, zinc alloy etcMachining equipment: Boring machine, line cutter, CMM ... , Surface roughness tester, Surface hardness testerProcess: Sanding casting process, investment casting process, die casting process, permanent mould casting, forged partsTreatment: galvanized, chroming, nickel, painting, Plastic ...