double sides polished Polycarbonate film is divided into three kinds, the normal type, the printing type and the optical type, separately, First, the normal type is widely used in the phone press buttons, digital cameras, signs nameplate, electric panel, instrument panel, and LED/LCD windows panel, membrane switch, and so on. Second, the printing type is suitable for the handwriting touch screen, high-grade electrical panel nameplate, Third, the optical type is the best choice of phone lenses, LCD displayer, digital lenses, optical lenses.