... aluminium tubes, special seamless aluminum tube, high hardness alloy plates, mould aluminum)2) processing technology: Precision ... micro-arc oxidation, anticorrosion chemical oxidation, electro-galvanizing nickel alloy, electro-galvanizing, electroplating tin copper alloys. Widely used ... stainless steel, aluminum, copper, bronze, bronze, solder alloy copper and iron, engineering plastic, nylon, or as ...