3M needs no introduction, its products cover all aspects of life, from transportation and construction to business, education and electronics. When it comes to automotive window films, 3M is one of the few manufacturers in the world that can produce their own insulation film from start to finish. Like Dragon Film and Quantum Film, 3M is also one of the eight members of the International Window Film Association (IWFA).
 
3M currently holds a number of patents for heat insulation films, is the owner of a number of world patents in the field of optical technology, and is also the inventor of PSA adhesive. PSA adhesive is the abbreviation of pressure-sensitive adhesive, generally one-component solvent-based acrylic pressure-sensitive adhesive, which is an important part of automotive window film and an important raw material for the explosion-proof function of automotive window film.
 
The safety base material for automotive window film is polyester film (PET), which has high tensile and impact strength. When subjected to external impact, the safety base layer can play an effective role in cushioning, and 3M is the only independent manufacturer of polyester materials for thermal insulation film substrates. Its advanced technology ensures the exceptional clarity, lightfastness and strength of 3M's automotive window films.
 
In order to prevent this from happening, manufacturers usually add a pressure-sensitive adhesive layer when manufacturing window film, which can firmly stick the glass fragments on the surface of the window film, and only a small amount of powdery glass fragments are scattered when the collision occurs, which can minimize external damage. Inferior film usually uses inferior pressure-sensitive adhesive, which contains a large amount of benzene, formaldehyde and other toxic substances, which will volatilize and produce peculiar odors in the sun, while 3M pressure-sensitive adhesive has strict requirements for the release of benzene, formaldehyde and other substances, in line with national regulations.
 
3M has a wide range of automotive window films, with an average of more than 3 new thermal insulation film products launched every year, and the product renewal rate is very high. Most of 3M's automotive window films are made of non-metallic technology, and there is no electromagnetic signal shielding in the frequency range of commonly used wireless devices such as mobile phones, GPS navigation, highway ETC, Bluetooth, etc., and there will be no trouble with metal film electromagnetic signal shielding.
 
The Jingrui series is 3M's top-of-the-line products, which are independently produced by 3M, while the mid-to-low-end products are OEM by major foreign manufacturers such as Mitsubishi, Shurejia or Korean factories. Jingrui series uses a unique multi-layer optical film nanotechnology, which combines more than 200 layers into a film that is less than a post-it note, each layer can selectively reflect infrared rays, and after more than 200 reflections, most of the heat can be reflected to the outside of the car, and the heat insulation is significant. In addition, Jingrui series also has the function of oblique emission enhancement, the thermal insulation effect changes with the change of the angle between the sun's rays and the glass, the noon temperature is the highest, when the sun is the strongest, it happens to have a higher thermal insulation effect, taking Jingrui 70 as an example, its thermal insulation rate can float in the range of 50%-59%, and the visible light transmittance is 71%.
 
3M is very well-known in the car family, because of this, 3M has also become the primary brand of inferior film manufacturers "impersonation", domestic "3M" products are mixed, product indicators are false, chaotic, fake as true, shoddy phenomenon is not uncommon. In order to make huge profits, unscrupulous merchants use low-cost raw materials of poor quality, toxic and harmful to make them, and then label them with the "3M" brand or mislead consumers through the form of "3M XX" famous brands. In order to ensure product quality, users are also requested to choose officially authorized channels to purchase.