This gel, made of inorganic compound, has a self-washing function. In general, 30-70ml of gel is applied to one square meter of granite plate twice at intervals of two hours to film it. Then when water is sprayed on the filmed granite in a week, the self-washing function will operate soon.

The gel helps prevent the surface of granite from being polluted or moss-covered, by such natural energies as sunshine, wind and rain.