... factry price OEM good service CNPC POWDER BRAND FUSDE SILICA POWDERfused silica powder Using the highest purity silica sand ... a bit of them will transplant frog shape. The special features of this product: consistent chemistry, excellent thermal shock ... and many other excellencies. Size Available:(ingot, granules and powder) 200mesh,325mesh,400mesh,600meh,800mesh,1200mesh,2000mesh,3000mesh. ...