Area of use: Car window, building galss, home window etc. Life: (based on vertical surface exposure) 10 years. Advantage of nano ceramic film. Whether you're driving, at home gazing out at your garden, or sitting by a window at work, you.Actually may be suffering continual skin damage. While everyday windows block most of the sun's ultraviolet B (UVB) rays, they allow much of its ultraviolet A (UVA) rays to pass right through. UVA penetrates deep into the skin, causing DNA damage that can accelerate skin aging and lead to skin cancer. If you frequently sit by windows. The single best safeguard against UV damage is transparent window film, sometimes referred to as window tint, which has been specially treated. To screen out both UVA and UVB rays. Installing protective film on your windows will keep you virtually UV-free on the road, at home, or at the. Dear, if there is anything you are not satisfied with our products, our customer service or something else, please feel free to let us know and we would do our best to resolve it for you as soon as we could. We honestly would like you give us a chance to resolve the problem before you leave any unhappy feedback. Also, if you are satisfied with our items and our customer service, please kindly give us. That would be the best honor for us. If you need more size or.