Owner's experience: should the crown be covered with film? What movie should I show?

First of all, female car owners must post. Why? Generally, the ultraviolet blocking rate of a good explosion-proof film is above 99%, which is good for protecting the skin, although mm should be coated with blocking cream in summer. Some car owners may say that the glass of the crown itself has anti-ultraviolet function and does not need to be pasted. Yes, the crown itself is UV-proof, but he didn't say much, did he? As far as I know, the ultraviolet protection of ordinary automobile glass is about 80%, and there is no harm in adding a film. Thirdly, when it comes to Crown Car Film, we have to talk about gps, and whether the film has any influence on signal reception. This is a lot to talk about, and listen to my brother slowly. Speaking of which, it's time to say membrane. Why does the membrane block the reception of signals? This is about the material of the membrane. Most of the high-end films with mature technology in the market are metal films. To put it bluntly, it is strange that your glass is covered with a layer of metal, which does not affect the acceptance. You got it? There used to be a joke that if the film you posted had a great influence on gps signals, it meant that the quality of the film was better. This is the principle, which means that the material is more complete, hehe. If you put a metal film on the whole car, but the signal reception of the electronic products in your car has no effect at all, your brother is likely to be fooled. So is it impossible to photograph Crown Car with gps? (The following discussion is all about wind-proof window film. ) of course not, there is no absolute thing. If your film itself is inferior, it will definitely not affect the acceptance, absolutely no problem. Just kidding. Now there are high-end explosion-proof membranes made of other materials on the market. For example, the ceramic membrane of amber optics, Farratt also developed a plastic membrane, nnd. Everything can be made into a film these days. The above two kinds of membranes are known to my brother, which solved the problem of signal blocking in principle. However, other companies also have their own so-called metal films that do not affect signal reception, such as Dragon Film, 3m. Dragon film is said to be non-conductive, so it does not affect acceptance (I don't understand). As for 3m, Toyota 4s stores are also using it now. I guess the principle is simple. Its metal content must be very low. If it can block ultraviolet rays while ensuring light transmittance, but you still want to insulate it, I think you'd better forget it. I also want to say here that many manufacturers like to steal concepts, and even some big companies above are not immune. Generally, they like to say that infrared thermal insulation rate is solar thermal insulation rate, and 90% infrared thermal insulation rate is solar thermal insulation rate. The implication is that the solar spectrum is only infrared and nothing else. In fact, at present, there are not many explosion-proof films with heat insulation rate of 70%, which is at the expense of light transmittance. If the light transmittance exceeds 70%, the heat insulation rate reaches 50%. As for the crown with gps, let alone other films. The v70 can't be used anyway. The v70 is called the gps killer. It's a seven-layer metal film. I'm really not bragging. Just wait for the gps to hang up after posting it, hehe. I just posted this, and the effect is ok, but my gps is just ... and then you asked me what film I should post, and I'm not sure. I have seen some products, such as amber optics, but I don't think there are any products with a light transmittance of 70%. It's a little unsafe to stick the front windshield. Other products, such as Farat, have acceptable indicators and are made of plastic, but I don't know much about it. Of course, there are other companies' products with different processes on the market, so I'm not sure about its detailed principle.