Luminous powder can be in the dark in the automatic light-emitting materials, the main components of rare earths, belong to inorganic materials.

Luminous powder absorbs all kinds of light and heat first, converted into light storage, and then automatically glow in the dark, through the absorption of various visible lights to achieve the luminous function, the product does not contain radioactive elements, and unlimited number of cycles can be used, especially for 450 nm below the short-wave visible light, sunlight and ultraviolet light (UV light) has a strong absorption capacity.