Air purifier is also called the air purifier machine, the air cleaner, fresh air purifier, refers to the adsorption and decomposition or transformation of various air pollutants (generally include PM2.5, dust, pollen, peculiar smell, formaldehyde, decoration pollution, such as bacteria, allergens, etc.), effectively increase the air cleanliness of products, mainly divided into residential, commercial, industrial, building.

There are many different technologies and mediums in an air purifier that enable it to provide users with clean and safe air.Common air purification technologies include adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, super-structure photo-mineralization technology, HEPA efficient filtration technology, electrostatic dust collection technology, etc.Material technology mainly includes: photocatalyst, activated carbon, synthetic fiber, HEAP efficient material, negative ion generator, etc.The existing air purifiers are complex, that is to say, a variety of purification technologies and materials are used at the same time.

Air purifier refers to the product that can absorb, decompose or transform various air pollutants and effectively improve air cleanliness.It has been applied in home, medical and industrial fields. The home field is divided into two categories: systematic fresh air system (including heat exchange and no heat exchange) and single machine, which are mainly used to solve indoor, underground space and indoor air pollution problems caused by decoration or other reasons.Due to the persistent and uncertain characteristics of the release of air pollutants in the relatively closed space, the use of air purifiers to purify indoor air is one of the internationally recognized methods to improve indoor air quality