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The brake disc, in simple terms, is a round plate, which also rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When the brake is stepped on, it clamps the brake disc to slow down or stop. The brake disc has a good braking effect and is easier to maintain than drum brakes.

The brake disc is divided into physical brake disc and ventilated disc according to the structure. A solid brake disc is a metal disc used for braking and has no special structure. The ventilated disc is divided into two forms, namely the scribing disc and the perforated disc. The function of the two treatment methods is to improve the cooling performance of the brake disc, reduce its thermal attenuation, and provide better braking ability. Brake discs are divided into carbon fiber ceramic brake discs and metal brake discs according to different materials. However, due to the excessively high manufacturing cost of carbon fiber ceramic brake discs and poor braking force at low temperatures, although they have excellent thermal attenuation characteristics, they are still Not selected by most vehicles. In order to increase the resistance to thermal attenuation, some manufacturers also treat metal brake discs with carbon fiber to improve their capabilities in this area, while avoiding the problem of poor low-temperature performance of carbon fiber ceramic materials.

As a key component in the automotive industry, automobile brake discs provide conversion, transmission control, thermal management and other behaviors for small automobile braking systems, making automobiles safe and stable. With the rapid development of the automobile industry, automobile brake disc has gradually become a popular product in the auto parts market.

The brake disc is an important part of the brake system, and its performance directly affects the braking effect. In recent years, with the implementation of relevant supporting policies and measures, the domestic automobile market has shown a steady and positive development trend, and the overall scale of the automobile brake disc market has maintained a growth trend. In 2020, the scale of China's automobile brake disc market will increase from 6.04 billion yuan in 2012 to 9.564 billion yuan. It is estimated that the market scale of China's automobile brake disc in 2023 will be about 10.6 billion yuan. Judging from the market size segmentation structure of automobile brake discs, the market size of OEM market (the market that supplies directly to automobile manufacturers or accessories) is expected to be 5.741 billion yuan in 2023, accounting for 58.25 percent. AM market (after-sales service market for after-sales maintenance, replacement and modification of auto parts) has a market size of 3.823 billion yuan, accounting for 41.75 percent.

In 2020, China's automobile brake disc production increased from 113.3062 million pieces in 2012 to 181.1842 million pieces, and the total demand for automobile brake discs increased from 103.0056 million pieces in 2012 to 162.1262 million pieces. It is estimated that in 2023, China's automobile brake disc production will be about 198 million pieces, and the demand for automobile brake discs will be about 175 million pieces. On the whole, the scale of China's automobile brake disc market is showing a positive growth trend.

The automobile brake disc is an important component that is placed on the wheel hub of the automobile and decelerates and stops the vehicle through the friction of the brake pads when driving. With the rapid development of the automobile industry, automobile brake disc has gradually become a popular product in the auto parts market. At present, the global automotive brake disc market data show that the United States, China, Germany, Japan, France, the United Kingdom and other countries are important producers of global brake disc products.

At present, the global automotive brake disc market competition pattern gradually tends to be centralized, mainly dominated by some large multinational companies. However, the scale of enterprises in China's brake disc industry is generally small, and enterprises with poor competitiveness, such as incomplete product varieties, account for more than 80% of the total number of enterprises.