1.Difference appearance,Zinc plating is white or blue,nickel plating is silver,it looks brighter than Zinc plating.
2.Corrosion resistance is different,nickel plating can generally pass neutral salt spray test 48 hours,zinc plating is generally 24 hours.
3.The viscosity of zinc plating is better than that of nickel plating.
4.There's no difference in magnetism.