1. Anti-corrosion (such as nickel, chromium, zinc, etc.)

Generally, the raw materials such as copper and iron are easily oxidized in the air. Electroplating a layer of metal with strong oxidation resistance can improve the corrosion resistance of the terminal.

2. Enhanced conductivity (such as gold plating, silver, etc.)

The conductivity of raw materials such as iron and phosphor copper is usually below 20%, which cannot meet the requirements for low-impedance connectors. Therefore, the impedance can be reduced after the surface layer is electroplated with high-conductivity metals such as gold.

3. Enhanced plating adhesion (such as copper plating)

For metals with poor adhesion, copper primer is usually used to enhance adhesion before electroplating.

4. Improve solderability (such as gold plating, tin, etc.)

The material has poor adhesion to tin, and a certain thickness of tin is plated on the surface to improve the solderability of the parts.

5. Beautiful (such as gold plating, silver, nickel, etc.)

After plating, the terminal metal usually has a brighter appearance than the material.