1.high impact strengh 2.weather resistance and uv protection 3..sound insulation 4.fire-retardant 5.light weight Product SpecificationThickness1. ... 5,1.8,2.0,2.5,3,4,5,6,8,10,12.Standard Width(mm)1200 ... .16J/kgk13) Heat deflection temperature: 140°C14) Heat conductivity: 2.3-3.9 W/m2°C15) Soundproof index:4mmthickness--27dB, 5mm--28dB, 6mm--29dB ...