Understanding UV Rays and Window Film: Protect Your Interiors
https://direct-wiki.win/index.php/Solar_Heat_and_UV:_How_Window_Film_Keeps_Your_Home_Cooler_and_Safer
Sunlight is a constant companion in most spaces, a source of warmth, light, and visual connection to the outdoors. Yet it also carries heat and ultraviolet rays that can fade fabrics, glare screens, and push cooling systems to work harder