Brown Fused Alumina, Abrasive Wheels, Resin Grinding Wheels manufacturer / supplier in China, offering Black Corundum Sandblasting Material Is Wear-Resistant and Highly Machinable, Black Silicon Carbide Sandblasting Material Is Wear-Resistant, Black Silicon Carbide Has a Mohs Hardness of 9.2 and Is of High Hardness and so on.