Super long afterglow phosphor is a rare earth activated alkaline earth metal aluminum silicate luminescent material, the product non-toxic, harmless, non-radioactive. 
 Phosphor can be used for a variety of transparent or translucent medium, such as plastics, coatings, paints, inks, signs, resins, plastics, toys, handicrafts, printing, wall switches, chemical fiber, printing paste and other light craft production, the play Good instructions and glow. 
 There are light pink colors: yellow, blue and green, sky blue, purple, red, white, etc. 
 The product is inspired high brightness, long afterglow time, is a new generation of high-tech, environmentally friendly LED products.