The multi-layer nickel plating is especially suitable for motorcycle parts and other anti-corrosive workpieces.  The three-layer nickel plating made up of the semi-bright nickel HN-M90, high-sulfur nickel HN-60 and bright nickel HN-8 has good corrosion resistance. It comes to Grade 9 or above in the CASS-011 test （16 hours）, so it is applicable for parts demanding high corrosion resistance. 

　　The double-layer nickel plating made up of the semi-bright nickel HN-M90 and bright nickel HN-8 has a potential difference of up to 130-160mV，coming to Grade 6-7 in the CASS test（24 hours）
 so it is applicable for the workpieces demanding high corrosion resistance.