Automobile stamping parts belong to the auto parts industry. In recent years, with the rapid development of my country's automobile industry, my country's auto parts industry has also developed rapidly, and the overall growth rate is higher than that of my country's complete vehicle industry. Although in the past two years, due to factors such as the new crown epidemic and lack of cores, the growth rate of market development has declined slightly. However, with the gradual easing of the epidemic and chip supply, the industry is gradually recovering. The data shows that the sales revenue of auto parts in my country has increased from 3.74 trillion yuan in 2017 to 4.57 trillion yuan in 2020, with an average annual compound growth rate of 6.9%. In 2021, the sales revenue of auto parts in my country will be 4.9 trillion yuan.
The SO 3547 standard is an important standard issued by the International Organization for Standardization (ISO), which specifies the design, size and material requirements of sliding bearing sleeves. This standard is essential to guarantee the reliability, durability and performance of plain bearings.