In hydraulic engineering, HDPE geomembrane for anti-seepage is widely used in anti-seepage treatment of reservoirs, dams, channels, and river treatment projects, effectively improving the safety factor and service life of the project. In the field of environmental protection, it serves as an impermeable layer for landfills, sewage treatment plants, and chemical tanks, effectively preventing pollutant leakage and protecting the surrounding ecological environment. In terms of transportation, HDPE anti-seepage geomembrane plays an important role in roadbed protection and tunnel waterproofing engineering of highways and railways, ensuring the stability and safety of transportation facilities.