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It is an eye protection products, when people use a mobile phone in the dark environment, not only can lead to vision problems, and can also affect the brain and healthy skin damage cervical nerve system this kind of mobile phone film can be induced the change of the light, when ambient dim, the film part of mobile phone radiation and light is blocked, and the use of mobile phones increases with time, keep the cell phone displays the contents of the increasingly blurred, the use of mobile phones directly blur when poor posture, thus inhibiting the use of mobile phones in dark environment and position is not correct, so as to protect the eyes