There are two types of air filters, namely dry and wet. Dry air filter is a filter that separates impurities in the air through a dry filter element (such as a paper filter element). The air filter dust-free clean room cleaner used in light vehicles (including cars and mini vehicles) is generally single-stage. Its shape is oblate or ellipse and flat. The filter material is filter paper or non-woven clean room cloth. The end cover of the filter element is metal or polyurethane, and the shell material is metal or plastic.

According to the type of organization: single-level, double-level and multi-level;

According to the degree of filtration: coarse filtration, fine filtration;

According to the filtering method: filtering type and swimming bath type;

According to materials and processing methods: PU (air filter), PP (injection air filter), environmentally friendly air filter),

PT (iron cover air filter) dust-free console

According to the viscosity of the filter material: dry and wet filtration and wet filtration.

Generally speaking, it is divided into PU, PP, environmental protection and PT according to different materials.