... Prompt delivery time Certification: ISO9001:2008 Dougguan Sheet Metal box factory Through its CNC punches and CNC bending machines, our company ... drawing, bending, spot or seam welding, spinning, forging, sand casting, die casting, investment casting, etc.Surface treatmentPolishing, zinc plating, nickel plating, chrome plating ... / assembly workshop The company travel Dougguan Sheet Metal box factory