These three types of solar films are members of the World Window Film Association. You can also find the corresponding factory in the American Coating Industry Association. The trademark of Ray-Ban's Chinese name is not affiliated with the corresponding factory in the United States. The brand is affiliated with Solutia Technology Manufacturing Factory in the United States. The promotion of CP 3M solar film market is similar to that of Ray-Ban. However, 3M itself does not have the production equipment and factories to produce magnetron sputtered solar films. It needs to cooperate with other factories to produce related products. The water in solar film is very deep. To identify a good solar film depends on the self-discipline of the brand