light guide panel is derived from the technology of notebook lcd backlight. with digital composition, it engenders matrix light-transmitting layer and changes the linear light into flat light .it has the same effect as the lcd mouitor of notebook computer. the lpg is ultra thin, bright reliable and long uniform illuminance.. besides, it is cost energy saving, environmental protecting and easy to install or shift. ultra thin light box thoroughly solves such problems as big bulk, heavy weight, high cost energy hard to transit, install and maintenance, etc the ultra thin light box has come out and got lots of attention from the market, it has been increasingly used and becomes more and more popular all over the world. http://www.gzwinchi.com