I am a dealer of Yichang brand water purifiers, and I went to the factory to discuss some matters last month. They have been producing pure water machines for a long time. I have been a dealer for almost 5 years. You can be sure that Yichang is factory-made. The quality of the product is relatively stable and reliable compared to other brands. As for the top ten brands of pure water machines, they should be unofficially recognized. Just spend money. Feel free to use it, it’s no problem. Oh, you can also go to the Ministry of Health’s website to verify it. Drinking water like this will make you feel comfortable, haha