luminous powder

The discoloration principle and structure of luminous pigments is a kind of luminous materials which can automatically glow in the dark , the main component is tombarthite, belongs to inorganic pigments.

There are two kinds of glow in the dark powder:long term luminous powder and short term luminous powder.
Long-term luminous pigment can absorb all kinds of light and heat, first  convert light energy storage, and then will automatically light in the darkness.
By absorbing all kinds of visible light emitting function, this product does not contain radioactive elements, and can be an infinite number of recycling, especially for 450 nm the short-wave visible light, the sunlight and ultraviolet light (UV light) has a strong absorption ability.

There are seven basic luminous colors, yellow green, sky blue, blue green, purple, red, orange.