Hangzhou Kosma Membrane Technology Co., Ltd. is located in China and deals exclusively in the production and export of Filter Cloth. Ts Filter Supply 0.22/0.45 Micron Nylon Pvdf Ptfe Filter Membrane Roll Material 13/25/47/90/142/293mm Diameter is built with PP,GF,PTFE,PES,PVDF,Nylon. This product is also ISO9001, FDA, CE, GMP, etc certified.