In order to improve the user experience and the service level of yipuyida, we will pay a return visit to customers one after another. We hope that through the return visit, we can timely help customers solve some faults encountered in the process of using the pure water machine, carry out some maintenance and maintenance of the pure water machine and do some maintenance training for users. In this way, we can better understand the latest use needs of customers and provide customers with more perfect solutions.