PE protective film is based on special polyethylene (PE) plastic film. According to the density, it can be divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene. The purpose of PE protective film is to effectively prevent dust pollution and scratches. The application fields of PE protective film include sheets, plates, electronic appliances, handicrafts, etc. PE protective film is used in the mobile phone digital industry and can be used as a mobile phone film. Mobile phone film, also known as mobile phone beauty film and mobile phone protective film, is a kind of cold lamination film that can be used to mount mobile phone body and screen. PE protective film is favored by many merchants because of its unique advantages. The biggest advantage of PE protective film is that it will not be corroded or scratched during production, transportation, and storage. The biggest role is to protect the original smooth and bright surface of the product from pollution, so as to improve product quality and market competitiveness.