Galvanization is the process of galvanizing the surface of some metal coated with a thin layer of other metals or alloys;is the use of electrolytic metal or other parts of the material attaching to the surface of a layer of metal film to prevent metal oxidation ( Such as corrosion), improves wear resistance, conductivity, reflective, corrosion resistance (copper sulfate, etc.) and enhances the role of aesthetics. The outer layers of many coins are also such kind of craft.
