Luminous signs now generally divided into PVC, aluminum material. There are also special requirements needed for the stainless steel substrate. This product is currently widely used in public fire safety construction. Good dark wayfinding functionality. Without any power supply, able to emit light by itself for more than 12 hours, and this feature is infinite loop. An absorbance fast, strong luminescence capability dark place, after a short time after the absorption of visible light may glow in the dark, to play the role of two evacuation instructions, require low excitation light, sunlight, low wattage for general lighting, can be used as excitation conditions 3 , absorption speed, emitting a continuation of a long time, usually just 5-10 minutes in the dark luminous sustainable over 10 hours, play the information indicated in the fire escape incidents role 4, easy to install, in floors, walls easy installation on the ceiling, no wiring and other complex processes 5, energy absorbing the light-emitting process without any power, long life, absorption, luminescence numerous cycles, brightness 15 years was still able to reach the standard fire evacuation