Owners to buy the car membrane should pay attention to what matters 
 The field of body change color film is currently no standard product through heat, light transmission, explosion parameters such as the lack of basis, so when consumers purchase a car film should pay attention to the following: 
 First, choose the film you want to view the manufacturer's warranty card. Regular brand of security signs, such as the purchase of 3M film consumers will spot a unique electronic warranty card number, this is not imitation, by this warranty card number, in the 3M on the official website for the purchase of Post the genuineness of the film, and received within a certain date, a real warranty book, received the warranty book or online or call to verify the authenticity, to prevent counterfeit and warranty book under false pretenses. 
 To view the service shop the brand power of attorney, authorization period expires whether to view the certificate of the level of training of construction personnel. 
 Third, the technical and soft and hard conditions of the film are high, such as dust-free environment, special equipment, standard operating procedures, and skilled, the film should not choose street shops. 
 , The consumer may require the construction site supervision and foil construction, and then with the rest of the "scrap" to take some samples to prepare for submission, then it will not undermine the integrity of the film, but also conducive to the accuracy of detection. 
 Five, a good film can usually normal use, 5-6 years, the film warranty cards and all kinds of bills and receipts, do not forget to ask for. Consumers should take the initiative in the purchase of the film the shop for security information, and as soon as possible to verify the problem easy to find business theory. 
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