... certain pressure to quickly with sharp edges and corners impact surface, so it was (3), low loss pomegranate sand ... ?Usually save conventional abrasive of 1/3. (4), surface treatment, high-quality garnet sand in the abrasion process, ... soluble salts and other substances contaminants, the treated metal surface is clean, non-embedded material, the quality can be ... 4%, CaO 2.2-3.9% Garnet for road paving