The automobile industry has been in development for more than 100 years. With the increase in car ownership, people are gradually aware of the negative effects of cars on the environment. These effects include energy consumption, air pollution and so on.

In addition to the use cost of automobile products (including energy consumption and money consumption), the automobile will also consume a lot of energy and materials in the manufacturing process. In order to solve this problem, car companies have started from manufacturing processes, materials, etc., in order to reduce car production costs, use costs and reduce environmental pollution.

Compared with the improvement of the manufacturing process, it is relatively easy to start with the material. At present, automobiles have gradually changed from the previous all-metal body to the metal body with plastic or composite materials. Among them, plastics are divided into many types, polyamide (nylon, PA), polycarbonate (PC), polyoxymethylene (POM), polyphenylene oxide (PPO) and so on.

　　Among them, polyoxymethylene (POM) is an engineering plastic with excellent performance, and is known as "Saigang", "Duogang" and "Super Steel" abroad. POM has metal-like hardness, strength and rigidity, and has good self-lubricating properties, good fatigue resistance, and elasticity in a wide temperature and humidity range. In addition, it has good chemical resistance. Character.

　　At a lower cost than many other engineering plastics, POM is replacing some markets traditionally occupied by metals, such as replacing zinc, brass, aluminum, and steel to make many parts. Since its introduction, POM has been widely used in electrical, electronic, and mechanical , Instrumentation, daily light industry, automobiles, building materials, agriculture and other fields.