... 2.Zinc,Nickel or Chromate plating,Anodize 3.ISO9001 Hinges Components/Hinges Components/Hinges Components Products Manufacture Lock parts according to your ... Welding, Threading, Grinding, Milling, Machining, Drilling, etc Surface treatment: Polishing, chrome/zinc/nickel plating, power coating, natural anodization, galvanizing, satin, electrophoress ...