Now there are so many brands of film, it is easy for car owners who don't understand this piece to be fooled. To be on the safe side, you must go to a regular brand authorized store to make a film. Don't post a brand-name film, what Sony, 4S original factory, and some cottage brands, such as 3M Platinum, Johnson & Johnson 99, Gu Wei Star, etc., and add some famous products. The words in the back row are all cottages, all of which are flickering. Among these brands, I posted them with xpel in a car film shop called Midu in the East Second Ring Road of Furong District. My car itself is a gift from the 4s shop. Driving a friend's car once felt different, and then I tore it off and replaced it with xpel.