Brown Fused Alumina, Abrasive Wheels, Resin Grinding Wheels manufacturer / supplier in China, offering Brown Corundum Sandpaper Grinds From Coarse to Mirror-Like Hard and Wear-Resistant, White Fused Aluminum Oxide 0-1-3-5-8mm for Refractory, Emery Cloth Wear-Resistant Efficient Grinding and so on.