The use of reactive oxygen species is adjusted according to changes in space and environment. Simple usage method: Take turns disinfecting the sealed doors and windows of the room. After leaving the room, turn on the oxygen ion button and wait for 30 minutes in the small room. For rooms with an area of 40-80 square meters, wait for 40-60 minutes. If the environment is poor, there are many viruses, and there are many people, you can open it several times a day according to the situation, and treat it for 10 minutes each time. Ultraviolet···