... abrasive products such as sand paper, sand cloth, roll, sand belt, flap wheel,etc..c Vitrified bonded grinding wheels and resin bonded grinding wheels ... removing, carefully sieve classifying, the grains is suitable for making resin Bonded Abrasive like cutting wheel, flex wheel and so on. Meanwhile ... (PSD) PSD According to ISO, ANSI, FEPA and JIS. alumina abrasive grains for abrasive wheels