... aluminum alloy common chromatic, aluminum hard anode oxidation, micro-arc oxidation, anticorrosion chemical oxidation, electro-galvanizing ... . Widely used in automobiles, mobile communications, computer precision instruments, medical equipment, and other fields.4) ... , mould seat, template, mechanical fittings, nc machining precision partsSuitable materialsSteel mold, HSS, tool steels,Carbon steel, ...