Reverse Osmosis (RO) technology is a membrane separation and filtration technology that uses pressure difference as a power source. It originated from the research of aerospace technology in the 1960s in the United States and gradually transformed into civilian use. Currently, it has been widely used in scientific research, medicine, food, beverage, seawater desalination and other fields.

RO reverse osmosis membranes have pore sizes as small as nanometers (1 nanometer=10-9 (billionth of a meter). Under certain pressure, H2O molecules can pass through the RO membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc. in the raw water cannot pass through the RO membrane. This strictly distinguishes between permeable pure water and impermeable concentrated water.

The pure water conductivity of general tap water after RO membrane filtration can reach 5 μ s/cm (RO membrane filtered effluent conductivity=influent conductivity x (1- desalination rate), and the desalination rate of imported reverse osmosis membranes can generally reach over 99%. Within 5 years of operation, it can guarantee over 97%. For those with high requirements for effluent conductivity, two-stage reverse osmosis can be used, and after simple treatment, the effluent conductivity can be less than 2 μ s/cm, which meets the national laboratory level three water standard. After passing through atomic level ion exchange column circulation filtration or EDI equipment, the effluent resistivity can reach 18.2 M Ω· cm, exceeding the national laboratory first level water standard (GB6682-2008).

Preparation of space water, purified water, distilled water, etc; Water for alcohol brewing and reducing alcohol content; Pre preparation of water for industries such as pharmaceuticals and electronics; Concentration, separation, purification, and water preparation in chemical processes; Boiler feedwater desalination soft water; Desalination of seawater and brackish water; Water and wastewater treatment for industries such as papermaking, electroplating, and printing and dyeing.