Is a microporous membrane or an ultrafiltration membrane for supporting said layer, on its surface covered with a thickness of only 0.1 ~ 0.25μm dense, homogeneous membranes for the separation membrane barrier layer. Such that the amount of material through a great increase. The composite membrane material may comprise any combination of materials, such as metal oxide coated on a ceramic membrane or a microporous polysulfone film coated with an aromatic polyamide film having a flat membrane or wound membrane to be used for non-wovens enhanced to support the pressure resistance of the microporous membrane, and the hollow fiber membrane is not required. Preparation divided into four categories: (1) lamination method, first prepared are very thin dense membrane, and then laminated to the microporous support film; (2) dip coating method, the polymer solution was dip-coated on the microporous film and then drying is made to be the reactive monomer or prepolymer solution was dip coated in the microporous film, heat or radiation curable; (3) plasma vapor deposition, plasma glow microporous support surface of the membrane to produce a dense homogeneous film; (4) interfacial polymerization, a microporous support membrane on the surface, with an active monomer interfacial polymerization. Composite film is mainly used for reverse osmosis, gas separation, pervaporation and other separation processes. Films with two different membrane materials were prepared surfactant layer (dense separating layer) having a separation function and play a supportive role of the porous layer. Geotextile composite membrane is affixed to one side or both sides of the film to form a composite geomembrane. In the form of a cloth membrane, two cloth one film. Width 4-6m, weight 200-1500g / square meter, physical and mechanical properties of tensile, tear, bursting and other indicators of high, the product has high strength, good elongation properties, deformation modulus, acid, anti-corrosion, anti-aging, anti-seepage performance characteristics. To meet the water, municipal, construction, transportation, subways, tunnels, construction of impervious, isolation, reinforcement, crack control reinforcement, civil engineering needs. Due to its selection of polymer materials and the production process adds anti-aging agent Edison tensile geomembrane, it can be used in unconventional temperature environment. Commonly used in dams, drainage ditch seepage treatment, as well as pollution prevention and waste treatment field. Geomembrane is a composite made of impermeable geomembrane and geotextile material, which is mainly used for impermeable geomembrane into a cloth membrane, two cloth one film, two films a cloth, Dobb more films, physical and mechanical properties of wide 4-6m, tensile, tear, bursting and other high civil engineering to meet the needs of irrigation, municipal, construction, transportation, subways, tunnels, etc. Geomembrane is in one or both sides after the film far infrared heating oven, the geotextile and geomembrane by guide rollers pressed together to form a composite geomembrane. With the improvement of the production process of high quality tensile geomembrane, there is a casting process do geomembrane. In the form of a cloth membrane, two cloth one film, two films a cloth. Geotextile as geomembrane layer of protection, protective impermeable layer from damage. To reduce the ultraviolet radiation latest geomembrane tension, increasing anti-aging properties, preferably laying buried in France. Good flexibility, in addition to a geotextile isolation, drainage, reinforcement, protection and so on, but also has a closed (impermeable) function. Guigang tensile geomembrane, Edison, new materials, practical tensile geomembrane provided by New Materials Co., Edison. Edison New Materials Co., Ltd. (www.fangshenmo.com) Shandong Texas, site construction materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. New material in Edison led the staff warmly welcome all inquiries negotiations to create new materials Edison a better future.