What is the appropriate light transmittance for car window films?

[Barbara]

According to the industry standard "CB/31849-2015 Automotive Film Glass", the front windshield requires a light transmittance of 70%, which meets national regulations for base materials. High-quality explosion-proof films should feature eco-friendly materials, high clarity, excellent explosion-proof performance, strong heat insulation, and effective UV blocking. Premium films can achieve up to 90% light transmittance and heat insulation rates, with UV blocking rates no less than 98%. Below is extended information about car window film light transmittance: 1. The front windshield is the main area exposed to sunlight, and proper films can effectively prevent tanning and interior fading. Always choose certified films. 2. Car window film light transmittance refers to the phenomenon where light is blocked by the glass and reflected at certain angles, known as "reflection", measured by reflectance. When light passes through the glass, part of its energy is lost, known as "absorption", measured by absorption rate.