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. Polypropylene extrusion products are also many, of which the largest amount is fiber and silk, mainly because polypropylene has good mechanical properties, wear resistance, chemical corrosion resistance and low price. Polypropylene silk and fiber products mainly include monofilament, flat silk and fiber. Monofilament has low density, good toughness and good wear resistance, and is suitable for the production of ropes and fishing nets. Flat wire tensile strength is high, suitable for the production of woven bags, can be used for packaging fertilizer, cement, grain and chemical raw materials, etc., can also be used for the production of woven cloth, propaganda materials and rain cloth. Fiber can be widely used in the production of carpets, blankets, clothing, artificial turf, filter cloth, chemicalbook-free woven cloth and curtains. The extruded polypropylene can also be used to produce thin films. The biaxially stretched film can improve the strength and transparency of polypropylene, and can be used as typewriter tape, cigarette packaging film, food bag, etc. In addition, polypropylene extruded products can also be used for pipe, sheet, narrow strip, tear film, packaging tape and so on. Polypropylene hollow products have good transparency, mechanical properties and moisture barrier, can be used as detergent, cosmetics, drugs, liquid fuel and chemical reagents packaging container.