... by polycarbonate resin, and both sides of the sheet contain UV protective layer. There are many excellent features of the ... weather-resistance, good impact-resistance, heat insulation, soundproof, lighting, anti-UV and fire retardation, etc., and the sheet as very good ... at break: >100%14) Specific heat: 1.16J/kgk15) Soundproof index: 4mm-27dB,10mm-33dB Applications of polycarbonate sheet: 1) Roofing ...