The main raw material of luminous stickers is Photoenergy storage luminous powder, and Photoenergy storage luminous powder is that fluorescent powder is exposed to natural light, sunlight light, ultraviolet light, etc, store the light energy. After stopping the light irradiation, it is slowly released in the form of fluorescence, so it can still be seen at night or in the dark, lasting for a long time. From a few hours to a dozen hours. So please try your best to let it be exposed outside to absorb the light after receiving it. Don't have something to block it. Only after lighting can luminous absorption become more and more bright, the longer it takes!