Recently, Bian Xiao heard that the car owners' friends were discussing the related issues of Audi A2 film, and they had an exchange in the community of Wang Chang. Bian Xiao doesn't want to be alone. With this problem, he went deep into the automobile market and collected a lot of relevant information, which is now sorted out as follows: trick 1: the film with poor hand feeling is made of ordinary polyester film. Because of its loose internal structure, easy dyeing, low strength, inelastic, lack of toughness and easy wrinkling, it does not meet the basic requirements of safety and explosion protection of automobile film. High-quality film adopts optical grade polyester film. This kind of polyester film is not only expensive, but also thick and smooth, compact in structure, high in strength, high in safety and excellent in explosion-proof performance. Trick 2: The film of inferior color is mainly dyed, so these pigments are adsorbed on the surface of the film, which not only has poor color uniformity and stability, but also has serious color difference, which makes it easier to fade and blur. High-quality thin films adopt magnetron sputtering technology to adsorb rare empty metal atoms such as gold, silver, nickel and titanium through strong magnetic field. It is not only uniform in color, but also natural in color with hollow metal, with high visual clarity and excellent permeability, which is very suitable for automobile windshield. Trick 3: there is no scratch-proof layer on the surface of the scratch-proof inferior film, and scratches are easy to appear when lifting or wiping the window by hand; If you gently wipe it with alcohol, gasoline, etc. 1 min, the inferior film will change color; There is a professional scratch-resistant layer on the surface of high-quality membrane. For example, Bekaert window film has a globally patented scratch-resistant layer DuroGard, which is not only more scratch-resistant and difficult to scratch, but also does not change color after being wiped with alcohol or gasoline. Trick 4: Original factory warranty At present, the domestic car film market is mixed, and many OEM films are also deceiving people under the banner of original film. But only the warranty card given by the manufacturer is the real symbol of the original film. Remember, at present, only eight manufacturers such as Bekaert have passed the certification of the International Window Film Association (IWFA). Tip 5: Technical parameters Visible light transmittance, visible light reflectivity, heat insulation and ultraviolet blocking are commonly used performance indicators of automobile film at present. According to the optical principle, the basic relationship between the first three is: the higher the light transmittance, the lower the heat insulation rate; The higher the reflectivity, the higher the thermal insulation. However, high reflection will bring great hidden dangers to the driving safety of automobiles. Therefore, the three requirements of high light transmission, high heat insulation and low reflection are the highest level of automotive film technology today. Therefore, car owners must weigh and compare when choosing a car film. They can't choose high reflection and high heat insulation, which will cause unnecessary hidden dangers for driving in the future.

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