High anti-seepage coefficient:Great anti-seepage property which ordinary waterproof material can not be compared with, water vapor permeability K?1.0*10-13g.cm/ccm2.s.pa. Chemical stability - Excellent chemical stability, widely used in sewage treatment, chemical reaction tank, landfill. Resistant to high and low temperature, asphalt, oil and tar, acid, alkali, salt and other 80 kinds of strong acid and alkali chemical corrosion. Anti-aging performance - Excellent anti-aging, anti-ultraviolet, anti-decomposition, can be exposed during use, material life 50-70 years, provide a good material for the environment . Anti-plant roots - Excellent puncture resistance, can resist most of the plant roots. High mechanical strength - Good mechanical strength and excellent elasticity and deformation ability, very suitable for expansion or contraction of the base surface, can effectively overcome the uneven surface of the base settlement, tensile strength of 28MP fracture elongation of 700%. Economical - The cost of production is lower than the traditional waterproof materials, save the cost of the project up to 50% . Construction speed - High flexibility, a variety of specifications meet the requirements of different projects seepage, the use of hot-melt welding, weld strength, construction convenient and fast. Environmental non-toxic - Non-toxic environmentally friendly materials, do not produce any harmful substances.