A place that cures people's illnesses and relieves their pain. Here every day receives a large number of patients. Patients will carry a large number of bacteria. If there are not enough disinfection measures, then the hospital will absolutely become a warehouse of bacteria.

Air is the medium of many diseases. Indoor air pollution and microbial pollution on the surface are especially easy to cause secondary infection in the hospital, are a serious threat to the health of hospital staffs and patients.