recycled pp granule has good mechanical properties, which can be directly manufactured or modified to manufacture parts of various mechanical equipment, such as industrial pipes, agricultural water pipes, motor fans, and capital construction templates. The modified polypropylene can be molded into bumpers, scratches, etc., greatly reducing the body weight to achieve the purpose of energy saving. recycled pp granule can also be applied to the preparation of various corrosion-resistant conveying pipes, storage tanks, valves, special-shaped fillers in packing towers, filter cloth, corrosion-resistant pumps and the lining of corrosion-resistant containers. In medicine, it can be used to make medical devices; recycled pp granule could also be developed and applied in energy industry through grafting, compounding and blending processes.