Under-sink water purifiers usually consist of a pre-filter, a reverse osmosis membrane, and a post-filter, all installed under the kitchen sink. Pre-filters remove sediment, chlorine, and other contaminants that can affect the taste or odor of the water. The reverse osmosis membrane is the heart of the system as it removes up to 99% of impurities including lead, bacteria, viruses and other harmful substances. An after-filter then adds some healthy minerals and improves the taste of the water. Wholesale Water Coolers, Household Water Filter , Ro Water Machine , Countertop Water Purifier ,Mains Water Filter . There are various types of water filters such as reverse osmosis, ultrafiltration, activated carbon filters, etc. Each type has unique characteristics and advantages depending on the water source and other individual needs. For example, reverse osmosis systems are more effective at removing dissolved solids. The product will supply to all over the world, such as Europe, America, Australia,Austria, Bhutan,Qatar, Salt Lake City.As people pay more and more attention to the quality of drinking water, the use of kitchen water purifiers is also becoming more and more extensive. These devices use a variety of filtration methods to remove impurities and contaminants from tap water, providing households with clean, safe drinking water. In recent years, with the advancement of technology, the water volume range of the new generation of kitchen water purifiers has become wider and wider, providing unprecedented convenience and versatility.