Geomembrane is a waterproof barrier material with high molecular polymer as the basic raw material. It has excellent resistance to environmental stress cracking, low-temperature resistance, aging resistance, corrosion resistance, and a large operating temperature range (-60–+60), and long service life (70 years). It is widely used in seepage prevention of domestic waste landfills, seepage prevention of solid waste landfills, seepage prevention of sewage treatment plants, seepage prevention of artificial lakes, tailings treatment, and other seepage prevention projects.