LENGE, founded in 1998, is a comprehensive high-tech company integrating R&D, production, sales, testing and service . The products of LENGE cover microporous filter membrane, pleated filter cartridge, air filter, purification equipment and purification engineering supporting products. It strives to build an ecological industrial chain of purification industry Our company has passed the ISO 9001 quality management system, ISO 14001 environmental management system, ISO 45001 Occupational health and safety management system certification. Air filter, liquid filter, purification equipment products have passed the international certification. The whole series of clean-room equipments have passed CE certification. And we have the leading technology detection line, established the "Wuxi terminal filtration equipment Technology Research Center" and "Jiangsu Province precision filtration Engineering Technology Research Center". In recent years, we have undertaken 3 scientific research projects at or above the provincial and ministerial level, and 37 authorized patents, including 9 invention patents, 26 utility models, and 2 designs. Formed 3 enterprise standards and obtain 2 product certification approvals. The laboratory of our company has passed the national CNAS certification, won the approval of Jiangsu Province Specialized and special new small and medium Enterprises in 2022, and won the national specialized and special new small and medium enterprises in 2023. LENGE has laid out a "Branded" marketing service network and established a "Real-time Response" after-sales service system. The company takes the lead in proposing "One-stop Service at LENGE Purification Boundary". Relying on the ever-increasing brand attraction, driving force and radiation, LENGE strives to build an all-round ecological purification industry chain. LENGE adheres to the concept of "Taking quality as the foundation and serving as the purpose" and provides One-Stop Service for customers in cutting-edge industries such as pharmaceutical, food, microelectronics and environmental protection.