Air purifier, also known as "air cleaner", air freshener, refers to the ability to adsorb, decompose or convert various air pollutants (generally including dust, pollen, odor, formaldehyde and other decoration pollution, bacteria, allergens, etc.) For products that effectively improve air cleanliness, air purifiers are small household appliances used to purify indoor air, mainly to solve indoor air pollution problems caused by decoration or other reasons.

The air purifier can effectively settle various inhalable suspended particles such as dust, coal dust, smoke and fiber impurities in the air to prevent the human body from breathing to these harmful floating dust particles. The air purifier can effectively remove the strange smell and polluted air emitted from chemicals, animals, tobacco, oil smoke, cooking, decoration, garbage, and replace the indoor gas 24 hours a day to ensure a virtuous cycle of indoor air. The air purifier effectively neutralizes harmful gases emitted from volatile organic compounds, formaldehyde, benzene, insecticides, aerosol hydrocarbons, and paints, while achieving physical discomfort caused by inhalation of harmful gases.