[A] China Glass Network, light analysis <br> <br> solar film insulation effect because of the different grades are not the same, so we can use the surface of the solar power lamp (500w-700w) in the film is irradiated. If the low-grade film has poor heat insulation effect, it will feel hot through the film, and the high-grade film can penetrate it because there is almost no heat, so it does not feel hot across the film. Leather Tube Box,Custom Tube Packaging,Lotion Tube Packaging,Takeaway Packaging Boxes Shenzhen Yi Ding Peng Packaging Design Co., Ltd. , https://www.szydppackage.com
Second, oils <br> <br> detergent test method using a film, rubbing on the ground or oils cleaning agent (also referred to as "agent of the clear") is sprayed on the film, the film is inferior fade, that is, The so-called dyed film. If it does not fade, it is a high-quality film, that is, a primary color film.
Third, distinguished from the film abrasion resistance and low wear layer <br> <br> not wear, and the grade of the film there is considerable wear resistance. Therefore, after getting an architectural film and distinguishing its protective layer, just rub it on the wear layer a few times to see if it has a pattern. Those with patterns are low-grade films, and those without patterns are medium-to-high-grade films.
Fourth, see if there is electrostatic attraction
Since the metal material used in the low-grade film is scarce, it will slide left and right when the low-grade film is rubbed; and the high-grade film has an electrostatic attraction because it contains more metal materials, so it does not slip during rubbing.
Fifth, see if the plating layer is uniform
Pick up a building film and see if it is evenly plated. Evenly, it is a good quality film. Unevenness is a film of poor quality.