... , sand cloth, roll, sand belt, flap wheel,etc..c Vitrified bonded grinding wheels and resin bonded grinding wheels.d Pressure blasting, surface finish ... polishing application such as glass carving, rust removing, jean cloth grinding.f Wear-resistant and fire-proof products.g Friction products ... Distribution (PSD) According to FEPA – Standard 43-1984 R 1993 brown fused alumina for sandpaper