... has the color white ,high hardness, low toughness, high purity, excellent self-sharpening, grinding power, heat, high efficiency,acid corrosion, high temperature, thermal stability ... #,800#,1000#,1200#,1500#,2000#,2500#,3000#,4000#Refactory grade: 1-0mm,3-1mm,5-3mm,5-8mm-200mesh,-240mesh,-300mesh specificationChemicalcomposition ...