Founded in 1995. Shanghai DaGong New Materials Co., Ltd. is a high-tech company specialized on product development, research and production of PTFE membrane production and lamination. DaGong independently developed technology of PTFE membrane production and lamination for dry and wet filtration. The company owns several patents on this technology. For years the company has been working on research and development of world class new products and new technology, to improve product applications, widen its applied areas, and to provide customers with quality products and good sales services.