What does an air purifier do?

What does an air purifier do?
 
The air self-purifier is an air purification unit that provides a local clean working environment. It consists of a primary effect, a fan, a high-efficiency filter and a static pressure box. The structure is simple and the use is convenient. It is an ideal purification equipment for simple and small area needing air purification. There are fixed and mobile.
 
The fixed type is divided into ceiling type and window type. There are four installation rings on the top of the ceiling type self-purifier. The self-purifier is hung on the ceiling of the room with hanging ribs. After sending it into the room, the room can achieve the required clean environment, but it is required that the walls, ceilings and floors around the room should be well-sealed and not produce dust. Make sure to meet the requirements of a small room that needs an air-purifying environment.