1.This series of products are with ... .smooth surface,good hardness 5.good quality Features: 1) This series of products are with high intensity, ... ,no pollution.Widely implicated in the areas of ceramic,electric power,petroleum,chemical industry and light industry, they ... , flake alumina, kaolin, fusible corundum,porcelain enamel,dye,ceramic glaze,dope,printing ink,special glass,various ball mill machines ...