1.crude golden vermiculite 2.density:120-300kg/m3 3.Size:0.3-1mm,1-3mm,2-4mm,3-5,4-6mm 4.agriculture horticulture... crude golden vermiculite 1.Features Fireproof, heat insulating, sound and moisture absorbing, light weight, non-toxic, odorless, non-abrasive, etc.. 2.Size Golden/Silver Vermiculite1-3mm,2-4mm,3-8mm,4-8mm,10-20mesh,20-40mesh,10-40mesh,40-60mesh,40-80mesh,60-80mesh,60-100mesh, ...