Rainbow film is a kind of film that using interference of light to create rainbow color. In only micron thickness, there are hundreds of different layers making the film different from every way you look at it. The normal thickness of film is 14, 16 and 18 micron, with its purple, red and gold color. Rainbow film is widely applied in printing and wrapping industry, it is widely accepted for its bright color and colorful outlook. At the same time, rainbow film could also be cut into yarn with different width. After mixed with other yarns the final product could be sealed into cloth or curtain, making the product bright with color.