Solar discoloration ink

Solar discoloration ink can absorb visible light to excite the object itself’ s light.It is colorless and glows visible light (400-800nm) when exposed to sunlight and long wave ultraviolet light and restores colorless after evacuating the light source.
Color:colorless- purple, colorless-red, colorless-yellow, colorless-blue.
Printing Way:silk-screen, gravure
Solar discoloration ink