... by polycarbonate resin, and both sides of the sheet contain UV protective layer. There are many excellent features of the sheet, such ... -resistance, good impact-resistance, heat insulation, soundproof, lighting, anti-UV and fire retardation, etc., and the sheet as very good ... Sheet Outstanding Advantages: 1) 10 years guarantee 2) 50 micron UV layer coated3) Proved by ISO9001:2008, SGS, ROHS ect4) ...