It improves the corrosion and fingerprint resistance of Black Chrome-Ⅲ, Copper and Bronze plating. It also gives very high abrasion and chemical resistance compared to conventional coating. Despite the coating - the original feeling and vivid color of metals prevails. By adding the colorant in to the coating - new and unique color aspects can be achieved, not possible by regular metal color only. Silica-based coating opens new possibilities for plastic plating designs.