Plating on plastic is one of the surface finish technology that prevails in our life. Metallized plastics are widely used to improve the designs of automobiles, motorcycles, home appliances as well as the interior parts for kitchens and bathrooms in order to achieve rich and luxurious feelings. The metallization process is conducted on molded plastic resins such as ABS (Acrylonitrile Butadiene Styrene) or PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene). In the process, we operate degreasing, etching, neutralizing, catalyzing, acceleration, and electroless plating steps as the pre-treatment, then copper/nickel/chromium plating steps are following. In the conventional plating on plastic process, chromic acid has been used in the etching step; however, the use of chromic acid is regulated by REACH regulation to protect human body and environment.