Corrugated Polycarbonate sheet for roofing1) good at light Transmission 2) widely Weather Resistance 3) High Impact Resistance 4) Fire RetardantSpecification1), Thickness:0.8mm-1.8mm2), width: normally around 1m. depends on different profile3), length: customer made4), light weight.5), fine light transmission.6), impact resistance.7), strong fireproof property.8), with UV protection.9) Inhabit condensation.Profile:Semi circle :76-19; 62-16;32-6;180-50Trapezia:78-17;186-35;