... 1-2mm, Made in China Non-asbestos product silver and golden exfoliated vermiculite1.sizeExfoliatedgolden vermiculite0.3-0.65mm, ... ambient conditionsBulk density of gold expanded vermiculite :130-180kgs/m3Bulk density od silver expanded vermiculite:100-150kgs/m3or ... bora firproofing ,fire mortar,fireproofing tile2>.Heat preservation and insulation:sound-absorbing material,surken pipe ,greenhouse pipe ...