Aluminum Alloy Structure Doors And Windows price AIWO sun-shade slat is the core part of energy saving shutter system, it uses coated aluminum alloy sheet, filling efficient polyurethane foam after roll forming, then take shape of slat. Polyurethane foam is one of the best heat preservation material, and provided with mechanical strength. What鈥檚 more, coated aluminum antirust is weather resistance. Therefore, the low carbon environmental protection and energy saving slat can be used for a long time, the service life is usually more than 40 years. Energy saving slat is adopted completely eco-friendly PU foam, in the process of production and use will not release the HCFC material. Compared with ordinary outside sunshade products, AIWO energy-saving shutters also have sunshade and decorative characteristic, but its thermal insulation, noise reduction, anti-theft functions is better.Aluminum Alloy Structure Doors And Windows price website:http://www.nesbuilding.com/aluminum-alloy-structure-doors-and-windows/