Most people spend more than 80% of their time indoors every day on average. With the modernization of production and lifestyle, more work and entertainment and sports activities can be carried out indoors, and shopping doesn't need to go to the street every day. The suitable indoor microclimate makes it unnecessary for people to often go outdoors to adjust the heating effect.In this way, people will spend more time in indoor activity,even up to 93% of the time in a day. Therefore, it seems that indoor air quality is more closely related to human health and more important.
Although the indoor pollutant concentration is often low, the cumulative exposure is high due to long contact time.Especially the old, the young, the sick, the disabled, etc., have low physical resistance and fewer opportunities for outdoor activities.Therefore, the indoor air quality and the relationship between them are particularly important.
According to the data of China Environmental Protection Association, "2.8 million people in the world die directly or indirectly from decoration pollution every year, and the number of deaths caused by indoor air pollution in China has reached 111,000 every year. 15% of tracheitis, bronchitis and lung cancer are caused by indoor air pollution, 22% of chronic lung diseases are caused by indoor air pollution, 36% of respiratory diseases are caused by indoor air pollution, and 55% of couples are infertile.
Nowadays, people pay more attention to the pollution of the external environment, but people often turn a blind eye to the pollution of the indoor environment. The measurement results of various environments by research institutions show that the most serious pollution is indoor. Therefore, it is particularly important to purify indoor air efficiently.
