... Alumina 1,perfect polishing materials 2,precision sand mold, 3,casting,spraying 4,coating materials. Brown Fused Alumina Brown ... mold, casting,spraying and coating materials.It is made by alumina as raw material, which is melted at ... casting, spraying and coating materials, chemical catalyst carrier, special ceranics and high refractory materials. Major technical parameters:projectparameterAl2O3more ...