When buying a water purifier, you can't just look at the brand, because each brand has products with different technologies. It mainly depends on what technology they use for the water purifier. Nowadays, household water purifiers are mainly divided into ultrafiltration machines and reverse osmosis. Ultrafiltration machines are used when the water source is not polluted. It is a rough filter that cannot filter out alkali, alkaline, and nitrates in the water. Therefore, Not recommended to buy. If you want to buy one, buy reverse osmosis. This can really filter out everything, and the rest is pure water. The disadvantage is that it requires use, and 2-3 liters of water are wasted for every liter of water produced. As for whether purified water is good, I personally think it is tens of millions of times better than tap water, because I always use purified water for cooking and drinking, and there is no shortage of this or that. Finally, I recommend you a brand, which is slightly more expensive. , is a Smith water purifier, available in all Suning Dazhong, this is very good, I am not trusting you, I have worked for other brands before (DNC), I know this very well, I hope you can adopt my advice Suggestions, if you don’t understand, you can ask me,