I have been wholesaling this AR03 series water purifier from ANG RAN for over a year. It is one of the best-selling models in my store. What reassures me the most is the extremely low return rate. So far, no major problems have occurred, which has saved me a lot of trouble in after-sales service. Customers generally feedback that the filtration effect is very good, especially for families with newborns and those renovating. They have high requirements for water quality and are all very satisfied after using it. They have also introduced new customers.