Air purifier eliminates invisible pollution
The air we breathe every day has visible and invisible pollution. Even if the urban greening is good, there are still a lot of car exhaust emissions, dust, harmful substances, etc. It cannot be compared with the fresh natural air. Visible pollution is dust particles, while invisible pollution is harmful gases, such as formaldehyde and benzene, which have a great impact on human health and can even cause cancer. Too much visible pollution can cause smog. However, the level of smog...