Focusing on the development of new technologies and new products in the purification industry for 20 years, LENGE has jointly established the purification materials and technology research center and Jiangsu precision filtration engineering technology research center with Jiangnan University; LENGE has hired the former membrane making experts from milipore, and has invested tens of millions of years in the research and development of polymer materials and achieved remarkable results. In recent years, LENGE has undertaken 3 provincial and ministerial scientific research projects and 37 patents, including 9 invention patents, 26 utility models and 2 design projects.