【Light-emitting principle】: After the product is excited by sunlight, light and other visible light, it absorbs and stores energy, and can emit light naturally in the dark for a long time.
Note: Blue needs more absort light than green
【Light-emitting principle】: After the product is excited by sunlight, light and other visible light, it absorbs and stores energy, and can emit light naturally in the dark for a long time.
Note: Blue needs more absort light than green