1.silver expanded vermiculite 2.size: 0.71-0.5mm;0.1-1mm;1-2mm 1),size, expanded golden vermiculite ... 20-40esh,0.3-1mm,1-3mm,2-4mm,4-8mm expanded sliver vermiculte40-80mesh,20-40mesh,10-40mesh,0.3 ... raw sliver vermiculite0.3-1mm,1-2mm,1.4-2.5mm,2.7-5mm,4-10mmnote,the size will be adjust according to ...