Characteristic: The mainly material of Polycarbonate Twin Wall Sheet is polycarbonate with light weight, good strength, and high light transmission. The impact strength of the sun panel is 80 times that of glass and more than 175 times of bending resistant panel. The light transmitance is more than 75%. Hollow structure of the polycarbonate sun panel makes the panels have good performances of sound insulation, heat insulation and heat preservation. It can reduce the noise and save energy effectively. With good quality, our prodicts have passed the test of the National Construction Material Checking Center and gotten the certificate. Polycarbonate sheet is tested and reach class B1 according to QB8624-1997. It is be widely used as very safe materials. Specification: Thickness:3mm 4mm Width:900-1570mm Length:2440mm and customized length within 6000mm. Standard size:1220*2440mm (nonstandard can be available by customers requirements) Color: we have standard colors for your choice, also customize as your require, or you can tell us PANTONE color number. Application: 1. Roof light for office buildings, department stores, hotels, villas, stadiums, amusement centers, schools, hospitals and manufacturing plants. 2. Sounds sorption wall for freeways, high-speed railway and MRTS. 3. Indoors swimming pools, sun bath pools, green house roofs and sidings. 4. Subway exits, parking lots, garage tents, bus-stops, terminals, shopping arcades, large stadium and rain tents. 5. Robbery counters, banks, jewelry counters and police blast shields. 6. Pagodas, hallway tents. 7. Housing glass, indoor partitions, sidewalk, sight windows, sunshade, terraces and shower doors. 8. Thermal light shades, sign boards. Delivery time: 10 days after receive the L/C or the 30% T/T advance . payment term: 30% T/T advance, rest pay when see copy of shipping documents. TheL/C at sight also can be accepted.