High quality brown fused alumina, strictly control six chemical composition of AL2O3, TIO2, SIO2 and so on during its manufacture, strictly control grit shape and its composition, and have a targeted improvement in strength, purity, toughness, hydrophilicity, adhesion, self sharpness, life span, etc. during further processing, so make it with a property of excellent cutability and sharp. It is used for manufacturing abrasive cloth, abrasive paper, abrasive belt, abrasive disc, fiber disc and other coated abrasives products.