Green grinding sheet shall be used for grinding at first due to serious scratches.
Grinding with green grinding sheet (granularity of 35μ).
Grinding by green grinding sheet is completed, and all the scratches in the marking lines have been cleared.
Grinding effect by pink grinding sheet (granularity of 20μ).
Grinding effect by blue grinding sheet （10μ）.
Grinding efficiency by orange grinding sheet（5μ）, the grinding area is fine and almost transparent.
Polish with polishing paste and wool plate.
Polishing finished, repair completed, and the glass is clean as new.