fused silica powder high pure:99.95% factry price OEM good service CNPC POWDER BRAND FUSDE SILICA POWDERfused silica powder Using the highest purity silica ... conductivity and many other excellencies. Size Available:(ingot, granules and powder) 200mesh,325mesh,400mesh,600meh,800mesh,1200mesh,2000mesh,3000mesh. accordance with ...