The main raw material of Luminous Sticker is photo-storage luminous powder. Photo-storage luminous powder is a fluorescent powder that is stored after being exposed to natural light, daylight, ultraviolet light, etc., and after slowly stopping the light, it is slowly It is released in a fluorescent manner, so it can still be seen at night or in the dark, lasting for hours to ten hours. So when you receive it, try to let it be exposed to the outside and absorb the light. Don't block anything. It takes more light to absorb the night light after the daylighting, and the longer the time!