... bending, punching, welding, riveting, grinding, etc.Surface treatment:Powder coating, hot galvanized, painting, polishing, brushing,chrome/zinc/nickel plating, anodize, electronic polish ... Yongtong Building & Hardware Electric Co., Ltd.MAIN PRODUCTS:sheet metal, stamping part, metal box, metal cabinet, network cabinet, metal enclosure, Led display case, generator set, showing ...