Changzhou Duoling Water Treatment Factory established in 1985. Our factory is located in Jiangsu Province of China, covering an area of 15,000sqm. We mainly manufacture disc filtration system, water filters, filter cartridges,water valves, couplings, and plastic flow meters. With the modernized workshop, advanced mechanical equipment and competent staff, we provide high-quality products that have been well applied in industry, agriculture and environmental engineering. Many of our products have been exported abroad such as South-East Asia, Europe, Australia and Northern America.Our factory establishes a system in strict accordance with ISO9001 standard. Our stainless steel couplings has patent and the material can be 304,316L, duplex stainless steel or any other high quality special stainless steel. Our disc filters, auto backwash ceremic membranne filter, high flowrate PP pleated filter, backwash valves can fulfill different water treatment projects. Compared with traditional water filters, our disc filtetration sytem can save water and do excellent backwash and the weight is much lighter. It is more economical, high automatic, and space-saving.Our factory holds the idea of "striving for excellence, customers oriented". Welcome your partnership and cooperation with us. We will provide you with the best products and the most professional service.