led display 1.easy to write and wipe 2.long lifespan over10000hours ... , 40*60, 30*40 or make as your design.6. One year guarantee lifespan of leds : more than100,000 hs.7 ... reduction sales at dressing shops, bookstores, bars, malls, supermarket, window display, etc.2. For decoration in festivals, holidays and parties3. For ...