Air purifiers refer to products that can absorb, decompose or transform various air pollutants (generally including dust, pollen, odor, decoration pollution such as formaldehyde, bacteria, allergens, etc.), effectively improve air cleanliness, and purify indoor air. Polluting household and commercial air cleaners predominate. Some air conditioners, heaters and other air-conditioning equipment are dedicated to the research and development and technical improvement of the field of air pollution purification and filtration control, expanding from commercial air purifiers to agents and distributors of well-known brands in Europe, America and Japan, commercial, medical, and industrial multi-functional air purifiers Equipment and technology have been upgraded from maintenance to planning, design, and construction expertise to improve the cleanest air quality, and have been widely praised and affirmed by various industries.