Compare to the traditional steel sheet, SmartRoof Steel, temperature reducing up to 45°C and sound reducing up to 40 dbs. And in extreme weather SmartRoof Steel can bear 150°C Max. temperature and -40°C Min. temperature. What's important is cost saving, because SmartRoof Steel has combined heatproof function with soundproof function together and no need to reply on extra material. Regard to the lifetime span, guarantee up to 20 years, twice longer than traditional one. SmartRoof Steel, a new aging steel roofing material, will guide a revolution around the world. Nano-Tec Tile, a smart product you deserve to own.