... life, high efficiency, surface polishing, green nontoxic don't rub off; Widely used in stone processing and ground treatment, ceramic tile ... fade, won the acceptance of the customers.diameter :3",4",5",6"thickness 4.0MMgrite #50,#100,#200,#400,#800,#1500 ... granite and hard marble in automachine floor pad RESIN EDGE POLISHING WHEEL POLISHING PAD FOR FLOOR WET DIAMOND POLISHING PAD--floor polishing ...