1. The higher the infrared barrier rate of the film, the better. This statement is definitely a mistake. Because only 53% of the sun's radiant heat comes from infrared, another 3% from ultraviolet and 44% from visible light. Therefore, even if a film can block 100% of infrared radiant heat, 47% of solar radiant heat still needs to be dealt with.

2、隔热率：这个指标是车主能直接感受到的，市面有不少品种的膜标出的隔热率在80%以上，实际上汽车膜的隔热率一般在40%70%之间这个数据才是真实可靠的。而且只有一些高档的含有超薄金属涂层的膜才能达到这些指标。当阳光照射到汽车膜上时，太阳能将被分为三部分：穿透、吸收、反射，三者相加等于100%。其中太阳能被吸收的部分会转变成热量向外再辐射。隔热率就是汽车膜反射和吸收后再辐射出去的能量的总和。

2. Heat insulation rate: this indicator can be directly felt by car owners. There are many kinds of films on the market with a heat insulation rate of more than 80%. In fact, the heat insulation rate of automobile films is generally between 40% and 70%. This data is true and reliable. And only some high-grade films containing ultra-thin metal coatings can achieve these indicators. When the sun shines on the car film, the solar energy will be divided into three parts: penetration, absorption and reflection. The sum of the three is equal to 100%. The absorbed part of solar energy will be converted into heat and radiated outward. The heat insulation rate is the sum of the energy reflected and absorbed by the automobile membrane and then radiated out.

3、汽车膜颜色愈深越好。为了获得更好的隔热效果和良好的私密性，人们在选择太阳膜时往往会挑深色的汽车保护膜。其实一般的“黑纸膜”与“茶纸”根本就不隔热，膜的隔热效果由膜中隔热层决定。因此，不是汽车膜颜色越深越好，不能靠汽车膜颜色来衡量汽车膜质量。

3. The darker the film, the better. In order to obtain better heat insulation effect and good privacy, people often choose dark car protective film when choosing solar film. In fact, the general "black paper film" and "tea paper" are not insulated at all. The thermal insulation effect of the film is determined by the thermal insulation layer in the film. Therefore, it is not that the darker the color of the automobile film, the better. The quality of the automobile film cannot be measured by the color of the automobile film.

为爱车选购一款合适的汽车贴膜时非常有讲究的，汽车贴膜要注意什么马虎不得，以上关于汽车贴膜要注意什么只是关于汽车贴膜的选择问题，其实汽车贴膜安装也是关重要的，安装技术是决定汽车贴膜效果的重要标准。

When choosing a suitable car film for your car, you should pay attention to what should not be careless. What should be paid attention to is only about the selection of car film. In fact, the installation of car film is also very important, and the installation technology is an important standard to determine the effect of car film.