... 10-120mesh etc uses: construction,insulation,fireproof,horticulture,filler Expanded PerliteSize: 1-3mm,1-6mm,3-5mm,2-4mm ... Content:SiO268-76%Al2O311-16%Na2O4-5% Applications Because expanded perlite is good heat insulation, light weight, nontoxic, porous ... low price, hence it widely used in following fields: *lightweight construction insulation board, partition board, acoustic board, fireproof board ...