... aggregate,fillers,filter aid PerlitePerlite could be used in building construction products, horticultural aggregate,fillers,filter aid, ,and insulation fields.PerliteSiO2Al2O3Na2OK2OFe2O3MgOCaOLoss on ... -4mm ,3-5mm.Package: woven bag,or according to customer's requirementpayment:T/T in advance,L/C or other panyment ...