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The film that the new machine takes at the factory is not a film in the real sense, just a PE film, the main purpose is to ensure that the screen is not easy to scratch in the process of the mobile phone from the factory to the packaging, so the film is affixed. This film will lose adhesion after time storage, easy to tear off the screen, so you need to buy a professional film at the time of sale, or let the business send the film to, but in order to control costs, when selling mobile phones are sent ordinary anti-scratch film, general quality, many users in use for a period of time to lose the film sent by the business. Because the scratch resistance is too bad.