PPS plastic filling modification has been put into the market since the early 1980s. Because of its low price, excellent product function, and improvement of some physical properties of plastic products, it can replace synthetic resin, and its production process is simple, investment is small, and it has significant economic and social benefits. These five categories account for the vast majority of plastic raw materials. The others can be classified into special plastic raw materials, such as PPS, PPO, PA, PC, POM, etc. They are rarely used in daily necessities and daily products. They are mainly used in high-end areas such as engineering industry, national defense science and technology, such as cars, aerospace, construction, communications, etc. General plastic raw materials can only be used as general non structural materials, with large output, relatively low price and general functions. They are mostly used to manufacture daily necessities (such as PE, PP, PVC, PS, PMMA, EVA, etc.). PPS has excellent radiation resistance. In addition, pps is superior to nylon in heat resistance, dimensional stability, oil resistance and chemical resistance. PPS plastic has improved its thermal shock resistance, high filling property and high toughness: PPS (polyphenylene sulfide) resin is a kind of high heat resistance resin, belongs to super engineering plastic, and has excellent flame retardancy, mechanical properties, dimensional stability and chemical resistance. Its melting point is 280 ℃, and its continuous use temperature is 200-240 ℃, with high heat resistance.