CYH Plastic Plating | Precision & Adhesive Plating Introduction. Based in Taiwan, CYH was established in 1969 and is one of the leading electroplating services manufacturers. IEC 17025 certified auto parts copper plating, nickel plating and chrome plating are conducted by a numerous of inspections and environmentally friendly processes.. CYH is a chrome plating |. ELECTROPLATING PROCESS Electroplating is an electrolytic process for depositing a layer of metal upon a substrate to enhance the appearance or properties of the component. Electroplating is a form of electrodeposition The.