Although it sounds incredible, the number of deaths from diseases caused by indoor air pollution in the world every year is higher than that of traffic accidents known as the "world's first disaster".
As a household equipment that needs long-term operation, while continuously improving the indoor air quality, the filter screen will be filled with dust and dirt after a long time
Under the epidemic, wearing masks has become the norm, and indoor air circulation has become one of the keys for people to consider the quality of home environment.
