I recommend you to learn automobile business. With the rapid development of China's automobile industry, the increase of car ownership and the expansion of auto parts market, China's auto parts industry has developed rapidly, which is higher than the overall growth rate of China's vehicle industry. The data shows that the sales revenue of auto parts in China has increased from 3.46 trillion yuan in 20 16 to 4.6 1 trillion yuan in 2020, with a compound annual growth rate of 7.2%. It is estimated that the sales revenue of auto parts in China will reach 5 trillion yuan in 20021year.