... precision:+/-0.1mm advanced metal box fabrication with powder coated Professional metal-Sheet Parts processing Item Namesheet ... deep drawing, Bending, Punching, Threading, Welding, Tapping, Riveting, Grinding, CNC machiningSurface treatmentPolishing, Anodize, Zinc/Nickel plating ,Powder coating, ... steel ,ss, al,cu,galvanized panel2.Finish:powder coating,painting,sand-spraying3.large and small size ...