PP material: material used in plastic bags that we often use. The chemical name of PP is polypropylene. PVC material: PVC material is more thick but its light transmittance is not good. PET material: the chemical name of the film made from this kind of material is polyester thin film. AR material: AR is a kind of synthetic material, generally composed of three layers--the silica gel as the adsorptive layer, PET as the middle layer and outer layer as the special processed layer. Special processings usually can be divided into two kinds-- AG processing and HC processing. AG processing is anti-glare processing, adopted when making matte protective film. HC processing is hard coating processing, used on protective film of high light transmittance.
