1.Asbestos free silver vermiculite 2.Expansion ratio:6.5-10times 3. ... , water preservation, poisonless, odorless, low hardness, burning-avoidness, lighter.non-asbestos ,Low density ,etc4.Silver vermiculite usage AgricultureHorticultureConstructionindustryAnimal feedBlocking mixesSound Absorption ... 's requirmentsMobile number :8613582186358 Silver vermiculite raw and expanded(non-asbestos)