Sort

Color

Plating thickness

Salt spray testing

Remark

Zn-coating

Blue/multi color

5-20μm

>12/24hours

Applied to most products, the deeper 

color the better salt spray resistance 

Nickel plating

Silver

10-20μm

>16/48hours

Applied to most products

Ni-Cu-Ni plating

Silver

10-30μm

>16/48/72hours

Salt spray resistance wet and heat resistance

Epoxy

Black/Gray

10-30μm

>48hours

Well climate and salt spray resistance