Centralized supply of drinking water in the public environment (schools, hospitals, stations, restaurants, shopping malls, road administration, etc.) is a manifestation of social progress, which helps to improve the favor of consumers. Especially in the novel coronavirus pneumonia, the insufficient supplies of materials are becoming more and more important. Hangzhou Dali has more than 20 years of industry development experience, stable and efficient water treatment solutions, and constantly create value for customers and society.