Advantages of SICHENG Brown fused alumin: 1. Brown corundum is characterized by high purity, dense texture, large stacking density, strong self-sharpness, good toughness and extremely low magnetic content; 2. The grinding tool made of it has the advantages of sharp grinding, low heating rate, high grinding ratio and less adhesion in use; 3. The sintered abrasive tool has the characteristics of deep blue color, no network crack and no rust spot after firing.