White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling.
Brown fused alumina is made of bauxite, anthracite coal, and smelted in electric-arc furnace of high temperature more than 2000 degrees.
SIC is made from quartz sand and petroleum coke(smokeless acetylene) （salt added in the produce of green silicon carbide) as the mainraw material.
Chromite Sand for foundry use as a highly fireproof sharpener for moulds and cores. Originally from South Africa (SAMANCOR).
Ceramic foundry sand called China Cerabeads, ceramsite sand ,china Cerabeads and cerasand too, is made from high quality bauxite
Garnet is composed of natural Almandine rock garnet grains and has been famous for its natural hardness, more angular
Tabular alumina is made of Al2O3, after ingredients, grinding and forming, smelting in high temperature furnace turned to α- Al2O3.