... as per request.Surface:Electroplating, Electric smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum)3. ... as per request.Surface:Electroplating, Electric smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum)4. ... smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum) Iron, Aluminum Alloy, Zinc Alloy, Plastic, Crystal, Resin, ...