PTFE coated fiberglass fabrics is also called architectural teflon membrane. PTFE architectural membrane is anew type of building material, it is a kind of composite material made of PTFE coating and special strength woven glass fiber in 3um diameter, the material is soft comparing to traditional building material such as stone, steel, wood, brick and concrete, thus suitable for various shapes. PTFE (Polytetrafluoroethylene) membrane consists of a woven fiberglass fabric, coated with TeflonR, extremely durable, and weather resistant with self-cleaning properties far superior to those of most other structural materials.