Commercial water purifiers are actually an extension of household water purifiers. The most direct manifestation is that the water output is larger than that of household water purifiers, and it is a water purification product that can meet the drinking water (boiled water, room temperature water, ice water) needs of more than 20 people. Commercial water purifiers are mainly used in public and commercial places, such as government agencies, office buildings, hospitals, schools, restaurants, hotels, airports, etc. At present, the sources of drinking water for many enterprises and units are: bottled water, large and small water boilers. Commercial water purifiers provide users with fresh, safe, hygienic water that meets national requirements, and solve the secondary pollution problems such as unknown sources of bottled water, excessive bacteria, and the scale and "thousand boiling water" problems caused by the use of water boilers.