This standard specifies the classification, requirements, test methods, inspection rules, identification, Encasement, transportation and storage of cellulose triacetate (TAC) films for polarizers. It is suitable for TAC films for twisted nematic (TN) and super twisted nematic (STN) liquid crystal displays. A series of standards are quoted, such as the adjustment of the state of plastic samples, the determination of the tensile performance of the film base and the film. According to whether UV absorber is added, the film can be divided into general TAC film and UV-TAC film. It is required that each axis film should be rolled neatly, with a flat surface and no breaks, cracks and burrs.