Is it necessary to buy a water purifier? In general, it is best to install. this is the first layer of protection and the most basic filtration. unless the quality of municipal water can be guaranteed, it is basically impossible in China, the installation of the front water purifier has a long life and high cost performance. It can protect and extend the life of PP cotton or other first-class filter elements of the terminal water purifier. The better pre-filter water purifier will basically filter out the water quality much better. for example, the type of pre-filter with the Ryder West level can basically put most of the water impurities (such as rust, aquatic animals and plants, residue, etc.) is filtered out in the first line of defense, which is the first barrier protection for domestic water. It is also the most important one.
The smaller the filtering accuracy, the better? Of course not. it depends on your requirements and economy. if it is only rough air filtration, what is the use of such a small accuracy, isn't it a waste of money. Just meet the requirements.