1. Improve the dispersive ability and covering power of the plating solution obviously, so that LCD area is brighter while nigrescent or plating omission phenomenon in LCD area can be resolved.

2. It has obvious effect in solving the problems of poor leveling, nigrescence, bad covering in LCD area and plating omission due to high impurity of bath solution such as Fe, Zn etc.

3. It will decrease the leveling in MCD& HCD area when adding too much additive.