... delivery4. Customer-orientated design5. Perfect Surface, smoothness, without burrs and impurites6. Material:SPCC, SGCC, Stainless Steel, Carbon Steel, ... drawings: PRO/E, Auto CAD, Solid Works and CAM/CAE.8.Surface treatment: Zinc/Nickel/Chrome Plating ... chrome/zinc/nickel plating, powder coating,anodize.Making process: Stamping, deep drawing,bending, punching, laster cutting,threading,welding, ...