1.Size:20-325mesh0-8mm 2.Color:white and gray 3.technique :expanded 4.H.S code:6806200000 5.Specific ... gravity:0.15-2.4g/cm3 Expanded perlite 1. ... 0.1-1mm, 0.5-1.5mm1-2mm, 2-4mm3-6mm 4-8mm Horticultural Perlite: 1-2mm, 2-4mm, 1-4mm ,3-5mm.4-8mmSpecial ... .05-1mm,0.06-2.5mm,0.1-1mm1-3mm3-5mm,4-8mm >40 micron etcBrilliant expansion perlite :as ...