... sound insulation xps boardExtrusion and expanded polystyrene(XPS) thermal insulation boards are made with polystyrene.Through special ... compression,waterproof,moistureproof,air proof,light weight,anti-corrosion,long service life and low conductivity factor and so on ... make it fit for a wide range of acoustic and thermal insulatingapplications, including roofing, wall, freezing plant, refrigerator car, ...