brown aluminium oxide 1) High Al2O3 Content: 95%min 2) Professional manufacture 3) Hot sale overseas 4) Passed ISO9001:2000 Brown aluminium oxide1. IntroductionBrown ... gringding wheel, Grinding stone, Gringing block, sand paper, sand cloth, sand belt, polish wax, abrasive paste, coating etc..2) Refractory material: Mainly ...