Cyanide-free copper-tin additives

IWG-SON cyanide-free copper-tin Profile: IWG-SON is an alkaline cyanide-free copper-tin alloy plating process environmentally friendly than copper tin plating layer is about 55:45, a high coating hardness (600HV), low porosity, Good wear and corrosion resistance; color white, take a good bit capability, easy operation, good bath stability, without regular treatment bath, cost savings applied to metal parts of various decorative items, jewelry, jewelry, watches, glasses. electronic products.