With the improvement of people's requirements for the quality of life, the requirements for air are also increasing. The use of humidifier has become a necessity for people. The use of humidifier and purifier is to improve indoor air quality, but if you don't pay attention to cleaning in use, these household appliances may become a new source of pollution in the room. But many people don't know how to use the humidifier filter element. Today we'll share the usage of the humidifier filter.