... high quality products and the most competitive prices 2.high-grade refactory materials white aluminium oxide is ... sharpening, grinding power, heat, high efficiency,acid corrosion, high temperature, thermal stability and good features.It is not only ... #,2000#,2500#,3000#,4000#Refactory grade: 1-0mm,3-1mm,5-3mm,5-8mm-200mesh,-240mesh,-300mesh specificationChemicalcomposition( % )Magneticmeterial content ...