PET bottles are divided into natural color bottles, green bottles, blue bottles and other colors. The percentage of demand for PET bottles depends on the specific use. Generally, the higher the PET content, the better the price. Therefore, plastic recycling and packaging stations need to screen the color and material separately. Domestic sorting machines are cheap. The efficiency of sorting PET bottles by sorting machines is about 85-95%. If the sorting effect is controlled better by manual sorting, it is only used for small-volume equipment due to high labor costs.