The greater the filter accuracy of the front filter, the better or the smaller the better It's better to be bigger. you can put 2 filter elements, the front placement accuracy is higher, and a filter element with small precision is placed behind, so the filter element is not easy to be damaged.
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Is the front water filter in China 40u or 100u good The water purifier is to be replaced. of course, it is more polluted with a filter element. A front-end coarse filter of water. It filters large impurities over 4 microns, such as things in water pipes, to protect the safety of water equipment. These two are not a concept. just drink water and install a water purifier.
