How to replace a new valve?

Installation of new valve:

1. Turn off the hot & cold water supply under the sink unit.
2. Remove the little indice (i.e. blue/red or C/H).
3. Unscrew the handle screw and remove the handle.
4. Unscrew and remove the damaged valve.
5. Clean the surface of contact of the valve gasket.
6. Screw in and tighten the new valve and re-assemble in reverse order.