... -2mm,2-4mm,3-8mm,4-8mm, Raw silver vermiculite0.25-0.7mm,0.3-1mm,1-2mm,2-4mm,3-8mm,4-8mm,20 ... -40mesh,40-60meshExpandedgolden vermiculite0.3-0.65mm,0.65 ... ,1-3mm,0.3-1mm,3-6mm,4-8mmExpandedsilver vermiculite 0.3-1mm ,1-2mm,2-4mm,1-3mm,3-5mm,3-6mm,4-8mm 3.Vermiculite chemicalsCompositionSiO2MgOAl2O3Fe2O3CaOK2OphPercentage37 ...