In people's subconscious mind, indoor air quality is higher than outdoor air quality, but in fact, indoor air quality is generally satisfying, indoor air quality is high, in addition to suffering from atmospheric pollutants and human bacteria emitted by various indoor furniture and building materials. There, indoor air quality needs to be improved, but this also reflects the importance of air purifier.

look at the pollutants in our indoors, and what kind of pollutants are hidden in a place that people consider as the safest place, and what kind of harm it will cause to our health.
1. Formaldehyde: The source of formaldehyde. Formaldehyde is released when the adhesive of plywood, large core board and MDF and particle board used in furniture production is heated; coatings, chemical fiber carpets, cosmetics, etc. that use formaldehyde as preservative; urea-formaldehyde resin foam as an insulating material for heat and cold protection in houses, it releases formaldehyde under the action of light and heat; indoor smoking, the smoke of each cigarette contains 20-88ug of formaldehyde.

2. Benzene (mainly divided into benzene, toluene, and xylene): also known as "aromatic killer", benzene is mainly absorbed and released in the form of vapor, and its liquid can be absorbed and ingested by the skin. In my country, due to the large-scale application of various benzene-containing solvents, in addition to the 500,000 occupational exposure to benzene and benzene-containing solvents, it also leads to the widespread presence of benzene in indoor and outdoor ambient air. The benzene series mainly come from synthetic fibers, paints, additives and diluents in various paints and coatings, various solvent-based adhesives, and waterproof materials.

3. Ammonia: Ammonia is colorless and has a strong pungent odor. The investigation found that the main sources of radon: geological structure, building materials; natural stone (marble, granite), mainly granite. Concrete additives (antifreeze), additives and brighteners used in furniture finishing, etc. Indoor ammonia pollution mainly comes from buildings where ammonia-containing antifreeze is used in structural construction.

4. TVOC: TVOC is not a specific substance, but a general term for volatile organic compounds; its scientific name is total volatile organic compounds. TVOC is composed of more than 200 volatile organic compounds, which is colorless and odorless. VOCs in the indoor environment may enter from outdoor air or radiate from building materials, cleaning agents, cosmetics, wax products, carpets, furniture, laser printers, photocopiers, adhesives, and indoor paint.
5. Microorganisms; air pollution microorganisms refer to organisms that are invisible to the eyes in daily life, but they actually exist indoors that threaten human health, such as: mites in indoor carpets, pets or the human body" Bred" bacteria.