1.Size:5-325mesh1-3,2-4,3-5mm 2.Raw perlite 3.Color:green or grey 4.MOQ:20TONS 5. ... -resistant,alkali-resistant,Fireproofing,sound proofing ,light weight ,etc 2.Raw perlite Specification:12-16mesh,14-20mesh,16-32mesh,20-40mesh30 ... -3mm 2-4mm 3-5mm etc3.Physical and Chemical Properties of Perlite : Physical PropertiesChemical CompositionsExteriorGreen o grey SiO268-74Specific gravity2.2 ...