Founded in 1992, Litree is a group-type high-tech enterprise integrating membrane technology research and development, production and sales services. For 30 years, it has been focusing on the research and development of "membrane" technology, and has always adhered to the road of independent technological innovation. Litree has successively undertaken major scientific and technological research tasks such as the 2000 national scientific and technological research project, the "Tenth Five-Year", "Eleventh Five-Year" and "Twelfth Five-Year" national scientific and technological guidance projects, and the 863 project. At present, Litree has 146 domestic and foreign core patents (including 5 foreign patents), and has obtained many major scientific research achievements in "R&D and application of PVC alloy capillary ultrafiltration membrane".

Litree has established a marketing service network consisting of 26 directly affiliated companies and more than 500 distribution agents in China. Litree water purification equipment is widely used in municipal water supply, production water treatment, sewage treatment and its recycling, and urban households, as well as drinking water purification, commercial water use, rural water improvement, direct drinking water in public places and other fields. And Litree's technical products are exported to the United States, Europe, Japan, Southeast Asia and other countries and regions, serving more than 3 million households worldwide!