The protective film can be classified into a digital product protective film, an automobile protective film, a household protective film, a food preservation protective film, etc. according to the use. With the popularity of digital products such as mobile phones in China, protective films have gradually become a general term for screen protectors, and their functions in the field of screen protectors are also varied. The earliest high-definition scratch-resistant, to today's Hong Kong GLAUKE, 180 degrees And the OK8 functional protective film is favored. From the earliest PP materials to the popular AR materials, the materials have experienced more than five years of development and are slowly accepted by the majority of mobile phone groups.