TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The gas barrier layer is metal layer. The processing layer is composed of polyethylene terephthalate film and ethylene vinyl acetate resin film combined to form composite film; polyethylene terephthalate and ethylene vinyl acetate resin is co-extruded to form polyethylene terephthalate film, and an ethylene vinyl acetate resin film. The thickness of gas barrier layer is 20-50 microns. The thickness of processing layer is 25-300 microns. The back panel further comprises first adhesive layer, second adhesive layer and first outer coating layer. The first outer coating layer is composed of polyimide and polytetrafluoroethylene composite film. The first adhesive layer is adhered to the surface of gas barrier layer. The processing layer is adhered to the first adhesive layer. The second adhesive layer is adhered with the lower surface of gas barrier layer, and with the first outer coating layer. The third adhesive layer and second adhesive layers are made of polyimide and Teflon (RTM: Polytetrafluoroethylene). The third adhesive layer is adhered to the first outer coating layer. The second outer coating layer is adhered to the third adhesive layer. The thickness of second outer coating layer is 25-65 microns. The second outer coating layer is made of polyimide film and Teflon (RTM: Polytetrafluoroethylene) film, which are adhered together. The thickness of polyimide film and Teflon (RTM: Polytetrafluoroethylene) film is 12-30 microns. The thickness of first outer coating layer is 25-300 microns. The processing layer is polyethylene terephthalate film. The processing layer is adhered to the fourth adhesive layer. The fourth adhesive layer is adhered with ethylene vinyl acetate resin layer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The composite film is made of polyimide and Teflon (RTM: Polytetrafluoroethylene). The Teflon (RTM: Polytetrafluoroethylene) film is located on polyimide membrane surface. The composite membrane is co-extrusion film of polyimide and Teflon (RTM: Polytetrafluoroethylene).