What kinds of mobile phone protective films are commonly used?

Now there are three kinds of commonly used: plastic protective film, frosted tempered glass film and tempered glass protective film. 1. High definition film materials are made of PP, PVC, pet, AR and other materials. The screen has good light transmittance, but it is not resistant to scratch and fingerprint; 2. Frosted film is similar to HD film, but there is frosted effect on the screen, which can well prevent fingerprints; 3. As the name suggests, the toughened film adopts photochemical glass, which has the advantages of high-definition film and scratch resistance, but it will break when falling (this feature can also prevent the screen from breaking, so the toughened film is also called explosion-proof film).