Tianli Sunflower-pattern diamond renovation pad ：A transitional medium-grinding pad designed to remove coarse scratches left by metal grinding and renew dull surfaces on concrete, terrazzo, marble, and granite. The radial sunflower grooves ensure high-efficiency dust expulsion and heat dissipation, preventing the pad from glazing or burning during use. It leaves a uniform semi-matte finish, perfectly preparing the surface for the final high-gloss polishing stage.