... fire-resistant, chemical resistant.Abrasives gradeGrit size : 16#,24#,36#,54#,60#80#,100#,120#,150#,180#,220#Micropowder ... 1200#,1500#,2000#,2500#,3000#,4000#Refactory grade: 1-0mm,3-1mm,5-3mm,5-8mm-200mesh,-240mesh,-300mesh ... 30≤0.10≤0.0018micropowder240-4000≥98.5≤0.1≤0.4≤0.15—Refactory gradeGroup size0-1mm1- ... 3mm3-5mm5-8mm≥99≤0.1≤0.35≤0.3—Fine powder-180mesh-200mesh-240mesh-320mesh≥99 ...