... kind of ceramics material.Abrasives gradeGrit size: 16#,20#,24#30#,36#,46#,54#,60#,80#,100#,120#,150#,180#,220 ... #,400#,500#,600#,800#,1000#,1200#,1500# 2000#,2500#,3000#,4000#Refractorgrade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh ... to start business cooperation with us.. Green Silicon Carbide Powder240-4000