... , light weight, high strength, Low thermal conductivi Fireproof Calcium Silicate Board is a new white & hard thermal insulating material, it has ... , Low thermal conductivity, high temperature, corrosion resistance, non-toxic, easy cutting & sawing.Product NameFireproof Calcium Silicate BoardHCS-170HCS-220HCS-270Bulk densityKg ... .C,16hrs)1.50(1000.C,16hrs) Fireproof Calcium Silicate Board