Japan's East River is the first, and this is absolutely unparalleled. Next is happiness, beauty and health.
Except for the above, they are basically not produced by themselves, and they are all branded by other people's sports. The quality is not guaranteed. Moreover, the electrolyzer is described as "the most complicated home appliance with after-sales service", so I suggest that it is safest to order from the nearest manufacturer, because you have to ensure that someone will come to help you with your door-to-door service two years later.
You can refer to some websites to help you identify really good brands. Don't believe other people's comments, many manufacturers give their own comments, the key is to look at their own judgment! ! )