... ,metal color, metal plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used specific ... .1 etc, via of testing report from National product quality & control bureau: NPQC No.3. 200150013, as ... the aluminum sheet, the decorative lighting, the stationary, the flashlight, the aluminum knob, the aluminum keystroke, the aluminum support ...