This product is a new generation of environmentally-friendly, high-efficiency energy storage self-luminous signs developed. The material itself is non-toxic, does not contain any radioactive elements, and has excellent material stability and weather resistance. No power supply is required, maintenance-free, and safe and reliable. Its main feature is that it can continue to emit light for 10 hours in the dark after 10 minutes of natural light absorption under room light, and the light-absorption process can be used repeatedly.