The processing performance of polypropylene is excellent, and different products can be produced by a variety of processing methods for various purposes. The amount of polypropylene injection molding products is large, and the general daily necessities are mainly ordinary polypropylene. In automobiles, home appliances, industrial parts, etc., more polypropylene or modified polypropylene is used, such as toughened polypropylene for car bumpers and wheel housing covers, and enhanced polypropylene for instrument panels, steering wheels, fan blades, handles, etc.