... mm 3.CE, RoHS certification Features1. LED Writting Board is Ultra thin, can write, drew as wanted ... 2. The words and drawings on LED Writting Board are luminous, like neon lights, brightness and ... attractive;3. LED writting board has applied Guide light technology, high brightness, and ... with normal fluorescent light.5. LED writting board has a long lifetime that support 70000 Hrs ...