On top of the Mayler which carries metal dome contacts, silver paste or silver carbon paste is printed as ESD (Electrostatic Discharge Control). This helps reduce electrostatic which might be harmful to other parts inside of mobile phones. Electrostatic is gathered on the printed silver paste or silver carbon paste and neutralized.

1. Light & small
2. Damp proof, heatproof, cold proof
3. Dustproof is done on the Metal Dome, and oxygenation of Metal Dome has been avoided