... board 2.New Material:eco-friendly natural plant fiber 3.Function:Soundproof,light Sound barriersA noise barrier (also called a soundwall, sound ... times that of glass, 20-30 times of PMMA sheet Light transmission: 80%-90% for different thickness of clear colorUV ... 6mm--29dB,8mm--31dB,10mm-32dB 12mm--34dBApplications: 1) Roofing light sheet and sunshade for office building, department store, hotel, ...