The industrial pure water machine consists of three major parts: pre-treatment system, precision treatment system, and post-treatment system. After pre-treatment systems such as PP filter element (sand rod filter), activated carbon unit, and water softener unit, the content of suspended solids (particulate matter), colloids, organic matter, hardness, microorganisms, and other impurities in the raw water is greatly reduced. With the treatment load of precision treatment systems such as electric desalination, its service life is extended. Reverse osmosis water purifier is a device that integrates technologies such as microfiltration, adsorption, ultrafiltration, reverse osmosis, UV sterilization, and ultra purification to directly convert tap water into ultra-pure water. The core component of the reverse osmosis pure water unit is the reverse osmosis (RO) membrane. The purified water produced by the reverse osmosis pure water mechanism is fresher, healthier, and safer than bottled water.