Solar Discoloration Ink

What is Solar discoloration ink?

It is colorless when it is indoor but shows colors under the sunlight, and it can restore it's original color when it leave the sunlight.

Solar Discoloration Ink's Color:red, yellow, blue, green, orange, violet, sky blue

Printing way: screen, UV screen, intaglio.

Solar Discoloration Ink's Application:anti-forgering package,UV test card,clothes and so on.