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. water filtration for food service, Healthcare Water Purification System , Uf Water Purifier , Tap Water Filter System ,Home Soft Water System . Available in a variety of water capacity models from 50GPD to 800GPD, Angel undersink RO water purifier is ideal for any size home. Undersink RO water purifiers are easy to install and maintain, giving homeowners peace of mind. The product will supply to all over the world, such as Europe, America, Australia,Czech Republic, Vancouver,The Swiss, Ireland.The countertop RO water filter sits on a counter or tabletop. They're lightweight and portable, making them ideal for small apartments. Countertop RO water filters come in a variety of sizes and shapes, so be sure to consider your countertop space before choosing. Plus, they are easy to install and require minimal maintenance.