... :steel ,stainlees stell 2.finish:coating , galvanzied ,polisehd Customerized steel precision stamping part/metal stampingMaterial: carbon steel, tinplate, alloy steel, stainless steel ... machineCNC machine, milling machine, drilling machine, cutting machine, latching machine.Machining process:Milling, drilling, threading, welding, polishing, assembly.Inspection:Coating thickness ...