... 2. Good quality 3. OEM is welcome For Iphone Cover, Aluminum Cover Business Scope CNC center machining,automatic CNC turning,stamping, drilling ... or design drawings. Surface Treatment Heat treatment, plating(zinc, nickel, chrome, aluminum alloy), anodized with various colors, PVD/PCD coating, polishing ... requirement Rich-experience & good technical engineering support. For Iphone Cover, Aluminum Cover