Brown Fused Alumina 1, F4~F240,P8~P220,W1~W63. 2, Good abrasives, polishing materials, refractory,precision casting, etc. White Aluminium Oxide is made by alumina as raw material, which is meited at high temperature.Technical data:They are also used as polishing materials and precision sand, mold casting, spraying abd coating materials, chemical catolyst carrier, soecial ceranics and high ...