1. Easy to melt - either electric or hot melt can form a completely enclosed anti-seepage system.2. Easy to install and handle - lightweight, with a density of only 1/8 that of steel.3. Strong flexibility - can be wrapped and used for deep trench external fusion, which can make the pipe winding along the direction of the deep trench, reduce the number of joints, and resist ground motion (earthquakes and deep subsidence of the mining area soil layer).4. Resistant to internal, external, and microbial erosion, with excellent hydraulic performance, low resistance to smooth flow on the inner wall, low welding pollution, simple process, and convenient construction; Weak conductivity; Chemical corrosion resistance; Strong environmental adaptability; Strong airtightness, low gas permeability, low maintenance costs, significant economic advantages, and a service life of over 50 years (low depreciation).