PET chips bottle-grade are mainly used in the packaging fields of soft drinks, oil, wine, condiments, fresh foods, daily chemicals, and medicines. PET are food contact packaging materials with good mechanical properties, easy processing, acid and alkali oil resistance, high barrier, high transparency, anti-ultraviolet and static electricity. As the second largest polyester product in the world, PET bottle-grade has been increasingly widely used since the 1990s when it replaced glass Coke bottles, relying on its excellent packaging performance, light weight, low price, and large quantity.