Phototchromic products is produced with photochromic material that changes color when exposed to sunlight or UV. And reverts to its original color when the sunlight or UV is dimmed or blocked.

The products include UV test card, UV test sticker etc. When the test card is placed in the sun, the test area changes color. The color varies according to the intensity of ultraviolet light. If ultraviolet light is strong, the color of the test area will be dark. If ultraviolet light is weak, the color of the test area light will be light.

The color of photochromic products can be produced as follows:

Purple, Blue, Red, Yellow, Orange, Green, Fuchsia, Violet Blue, Rose Purple, Mulberry Purple, Green Black, Grey, Turkey Blue.