1:Application:for highway or railway sound barrier 2:Over 10 years production experiences 3:sold by manufacturer directly Sound ... (Kg/M2): 0.8, 1.2, 1.4, 1.6, 1.9, 2.2, 2.4, 2.6, 3.0, 3.3. 4) Colors: Clear, lake blue, green ... sheet can filter 99% ultraviolet radiation in sunlightSpecific gravity: 1.2 g/cmCoefficient of thermal expansion: 0.065 mm/moCTemperature: -40oC to ...