Landfill, oil, sewage or waste treatment plants, river bank, lake dam, tailings dam, water dam and reservoir area, channels, build projects such as impermeable liquid pool. High seepage coefficient -HDPE ordinary waterproof material impermeable membrane has unmatched anti-seepage effect, HDPE impermeable membrane has a tensile mechanical properties, excellent flexibility and deformation capacity makes it ideal for expansion or contraction of the base surface, can effectively overcome the uneven base surface subsidence impermeable membrane, water vapor permeability coefficient K <= 1.0 * 10-13g.cm / c cm2.s.pa.