Ecological Function

A closed indoor environment usually lacks ventilation and light.  Many Volatile Organic Compounds (VOC)  and formaldehyde produced by the decoration materials are difficult to discharge. At the same time, dust, droplets, inhalable particles, bacteria, fungi, and viruses are easy to accumulate and breed. Moreover, as the main body of indoor activity, human mouth, skin, and body metabolism will continuously release oil, turbidity, organic particles, etc. into the environment.