... ,acid corrosion, high temperature, thermal stability and good features.It is not only advanced abrasives materials,and or advanced grinding, polishing ... 2000#,2500#,3000#,4000#Refactory grade: 1-0mm,3-1mm,5-3mm,5-8mm-200mesh,-240mesh,-300mesh specificationChemicalcomposition( % )Magneticmeterial content( %)Abrasives ... .08≤0.30≤0.10≤0.0018micropowder240-4000≥98.5≤0.1≤0.4≤0.15—Refactory gradeGroup size0- ...