Blocking ultraviolet rays: ultraviolet rays only account for 3% of sunlight, but will cause fading of articles and aging of plastic parts. Excessive ultraviolet radiation can also induce canceration of human skin. High-quality car film can block more than 99% of ultraviolet rays, which can not only effectively prevent people in the car from being burned by excessive ultraviolet rays, but also protect the interior parts such as car stereos from being sunburned.
Thermal insulation: the owner can directly feel it, as long as the glass covered with film blocks the sun, and feel its thermal insulation effect with his face or hands. The heat insulation performance of car film depends on its reflection and absorption ability. The stronger the reflection, the stronger the absorption capacity and the higher the thermal insulation rate.
However, according to the laws of different countries and regions, it is generally stipulated that the visible light reflectance of car films should not exceed 10%. Because of the limited heat absorption capacity of automobile film itself, the heat insulation rate of automobile film is generally between 40% and 70%.