The thickness of the rainbow film is between 16u-36u, and the main color system includes three series of products: red background green light, blue background golden light, blue background purple light. Rainbow film is a multi-layer film, it makes full use of the principle of light interference, in the light irradiation, the refraction between the layers and interference between the layers of multi-angle layer color change, like the sky rainbow effect. The magic effect of rainbow film is that the rich light effect of the rainbow film substrate itself at different distances and different angles will show completely different magic effects.