I believe that many car owners who get a new car will dress up their car, and the car film can be said to be an essential link. Although car film is very popular, many car owners find that why some cars don't apply film? Is car film necessary?

汽车贴不贴膜问题不大，毕竟贴膜也要几百到几千元的费用。有的人会说，玻璃贴膜可以防止紫外线的辐射，前挡风玻璃贴上防爆膜还能防止玻璃破碎伤到车内人员。你说的我都懂，的确是好处多多，但也不是必须品。如果你买车本来就经济压力较大，这玩意儿可以省掉！

It's not a big problem whether the car is covered with film or not. After all, the film also costs hundreds to thousands of yuan. Some people will say that the glass film can prevent ultraviolet radiation, and the explosion-proof film on the front windshield can also prevent the glass from breaking and hurting the personnel in the car. I understand what you said. It's really good, but it's not necessary. If you have a lot of financial pressure to buy a car, you can save this thing!

从调查中可以发现，如今大多数高档汽车在车窗玻璃上，都选用双层玻璃。汽车双层玻璃不仅仅是多了一层那么简单，无论是隔音降噪，还是隔热抗冲击能力都会比单层玻璃好。如此看来，汽车不贴膜也说得过去，不过车主想再提高隔热性能、私密性以及隔绝紫外线，也可根据自己的需求来贴膜。

It can be found from the survey that most high-end cars now use double-layer glass on the window glass. Automobile double-layer glass is not only one more layer, but also has better sound insulation and noise reduction, heat insulation and impact resistance than single-layer glass. In this way, it makes sense not to apply a film on the car, but car owners can also apply a film according to their own needs if they want to improve their thermal insulation, privacy and isolation from ultraviolet rays.

在选择给自己的爱车贴膜时，这里要提醒各位车主，千万不能因为而选择过于低廉的劣质车膜，因为劣质车膜很有可能给驾乘人员带来事与愿违的结果。在辨别车膜时，可以通过观察车膜颜色、是否有异味、手感是否厚实平滑等，也可根据车膜具体指标来选择。

When choosing to apply a film to your car, you should be reminded that you should not choose a low-quality film because of the price, because a low-quality film is likely to bring counterproductive results to the drivers and passengers. When identifying the film, you can observe the film color, whether there is peculiar smell, whether the feel is thick and smooth, or you can choose according to the specific indicators of the film.