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Environmental Engineering Membrane Applications： Double membrane gas storage and sewage treatment projects are used to store and isolate all kinds of biomass gases and pollution gases. Such as biogas, sewage, medicine volatile gas. Characteristics: 1)It has the function of anti-methane corrosion, anti-UV and anti-microbial. 2）Excellent high and cold temperature resistance, anti oxidation, weather resistance and durable, without the need for antiseptic treatment. 3）Excellent tensile， tearing and adhesion resistance, the welding strength is greatly improved and the air tightness is good. 4）Oil proof and stain resistance， acid and alkali resistance, reach the flame retardant standard grade B1, it is the excellent membrane. 5）Light weight, easy to install-disassemble, printable.