... size: 16#,20#,24#30#,36#,46#,54#,60#,80#,100#,120#,150#,180#,220#Micropowder:240#,280#,320#,360 ... grade refractory materials3.abrasives tool4.grinding and polishing5.ceramics6.LED7.sandblasting8.aviation9.wire-electrode cutting10.photovoltaic and solar energy Packing1.25kg woven ... services in 19982.we have own silicon carbide and fused alumina factory,and suppliing one-stop services3.we have own import ...