1. Safety warning role stick on such as emergency evacuation passageway, the subway station, underground passage, cinemas, supermarkets, hospitals, etc. 2. This product needs to absorb the natural light or indoor lighting before used in dark, if natural light is insufficient indoor, please turn on the light for 15-20 nutes. 3. Natural glow in the dark, no need of power energy, energy conservation, environmental protection, bright warning labels can also beautify the environment effect. 4. Can stick on electric switch, remote control panel, wall switches, plugs, flashlights, door handles, handrails, fire-fighting equipment, fire alarm, rescue equipment, etc. 5. Waterproof, sunscreen, strong corrosion, self-adhesive, etc; And virulent insipidity, no radioactive elements; Construction is convenient and simple.