... .polishing,plating sliver 4.OEM ,delivery on time USA car sign Product details: 1.Material & process : Zinc alloy, brass, iron, copper ... )3.Thickness: norm-alloy 3mm,3,5mm,4mm,5mm etc(up to customer’s request)4.Electric-plateing:gold,anti-gold ... Physical sample;4.production launched once sample confirm; USA car sign