Can the film provided by 4S stores be applied?

[LaAddyson]

The film provided by 4S stores can be applied, for the following reasons: 1. Little difference from external films: Many people believe that films purchased online or from stores are better than those from 4S stores. Except for some products from major manufacturers, many films from small manufacturers are actually comparable to those from 4S stores, with little difference. 2. Car glass does not require high-quality film: Another common belief is that films from 4S stores have poor heat insulation and do not block UV rays. However, in reality, most car glass, especially the front windshield, has been treated, so the requirements for car films are not that high. This is also why many car front windshields are not covered with film.