133-7562-1123】 【Gongyi drain supply manufacturers! Gongyi sewage treatment Geomembrane Products waterproof board waterproof board, also known as geomembrane, is a basic raw material polymer waterproof barrier-type material, the anti- pull, tear, bursting and other physical and mechanical properties can meet the water industry, tunnel, traffic engineering requirements and to adapt to various working conditions. With anti-aging, durability, and to adapt to the ambient temperature range and puncture resistance, high strength, friction coefficient, corrosion, acid, non-toxic characteristics, can be -60 ℃ ~ 60 ℃ under the conditions used in the coverage of the use of up more than 50 years, construction is convenient, effective and reliable. Widely used in reservoirs, dams, channels, reservoirs, diversion tunnel, water recreation facilities, roads, airports, buildings, water and all kinds of grass-roots underground, underwater works as impermeable liners and garbage disposal companies, wastewater treatment plants and other environmental projects. Waterproof board is the tunnel, dam waterproofing material of choice. EVA, ECB waterproof board is ethylene - vinyl acetate copolymer adding special additives and anti-aging agent, three-roll calendar by Sec extrusion sheet production. Have excellent weather resistance, low temperature resistance, flexibility, extension rate, and anti-penetration performance. Railway, subway, water, tunnels, highways, anti-drainage works, dam protection works, roofing, seepage, landfill and port construction. Industrial and domestic reservoirs, golf courses, swimming pools.