Tickle: Use professional stone slotting machine and slit-cutting piece to hook out the sediment in the gap of stair stone.
Glue repair: clean it and repair it with marble glue with similar color.
Polishing: the stair stones are refurbished and polished in turn from coarse to fine. Grind off and smooth the scratches, weathering and alkali returning parts on the stone surface.
Cleaning: clean the stone of the stairs until the surface of the stairs is dry.
Crystal plane treatment: pour a proper amount of crystal plane agent or crystal hard powder into the stair stone, and polish the crystal plane with the needle plate of the stair stone grinder with polishing pad or steel velvet until it is bright. Crystal surface treatment has the functions of hardening, brightening, brightening and anti-slip.
Regular maintenance. Choosing reasonable curing period of stair stone and using stair machine with polishing pad for crystallization can keep the brightness of stair stone for a long time.