Household water filters have become one of the common appliances in modern households, used to provide clean and safe drinking water. However, water filters are not "one size fits all". There are many types of filtration systems inside them based on different functions and technologies.

The reverse osmosis system can remove heavy metals (such as lead, mercury, arsenic), nitrates and other harmful substances in water. The reverse osmosis system can provide safer drinking water, especially for sensitive groups such as infants, pregnant women and the elderly.

Countertop water purifier is a small water purification device installed on the kitchen countertop, usually directly filtered by connecting to the faucet or water source. Its core working principle includes: pre-filtration, activated carbon filtration, ultrafiltration membrane filtration etc..

Reverse osmosis membrane filtration technology is an efficient way to solve the problem of freshwater resource shortage by selectively separating solutes and solvents through semi permeable membranes. This technology includes microstructure, working steps, and advantages. By pushing seawater through the membrane under high pressure, it intercepts large molecules such as salt and produces high-purity fresh water.