PET material protective film is one of the most common protective stickers on the market. These three-layer PET protective films are used in mobile phones and tablet computers. The chemical name is polyester film. The characteristics are that the texture is relatively hard and scratch-resistant, and it will not turn yellow and oily like PVC materials for a long time. However, the protective film of PET generally relies on electrostatic adsorption, which is easier to foam and fall off, but that is...