Analysis of China's Automotive Filter Industry in 2025: Policy and Industrial Chain Perspectives

The main function of a car filter is to filter out impurities and harmful substances in gases and liquids, ensuring the normal operation of the vehicle and the cleanliness and safety of the air in the driver's cabin. There are four types of automotive filters for traditional fuel vehicles, including air conditioning filters related to the air conditioning system, as well as air filters, oil filters and fuel filters related to the fuel engine.

Due to the replacement of fuel engines by batteries, new energy vehicles only retain air conditioning filters in the traditional four filters. The automotive air conditioning filter is a type of filter specifically designed for purifying the air inside the car cabin. It adopts an activated carbon composite filter cloth composed of high-efficiency adsorption material - activated carbon and long-fiber non-woven fabric. Compact in structure, it can effectively filter out cigarette smoke, pollen, dust, harmful gases and various odors.

The state and industry associations are constantly formulating new policies regarding in-vehicle air quality and vehicle emissions. Standards are continuously rising, and the importance of automotive filters is increasing day by day. In recent years, technological progress in the automotive filter industry has continued to develop in both depth and breadth. Products have made significant advancements in lightweighting, energy conservation and environmental protection, multi-functionality, systematization, and modularization. The impact of filtration systems on automotive performance and their role in energy conservation and emission reduction have become increasingly important.

The upstream industries of filters mainly include raw material industries such as steel, filter paper, plastic parts, rubber or metal parts, aluminum ingots, and chemical materials. The downstream industries mainly consist of the engine manufacturing industry, the vehicle manufacturing industry, and the automotive aftermarket. The performance and quality of upstream raw materials have a significant impact on the quality of filter products. The supply and demand relationship and price of raw materials directly affect the production cost of filters. The development of the filter materials industry (mainly filter paper) plays a crucial role in enhancing the filtration effect of filters.