1) Reinforcement and drainage for road and railway subgrades; 2) Drainage for tunnels, underground subway passages, and underground warehouses; 3) Soil and water conservation for slope development; 4) Vertical and horizontal drainage for retaining walls; 5) Drainage for slippery areas; 6) Drainage for ash piles of thermal power plants. Drainage for landfill projects; 7) Drainage for sports fields, golf courses, baseball fields, soccer fields, parks, and rest green areas; 8) Drainage for rooftop gardens and flower boxes; 9) Drainage during construction of building foundations; 10) Agricultural and horticultural underground irrigation and drainage systems; 11) Drainage systems for low-lying and damp areas. Drainage for land preparation projects. Geocomposite drainage systems (GDS), also known as three-dimensional drainage boards, are internationally recognized as civil engineering materials for collecting and draining. They are a three-dimensional porous material formed by heating thermoplastic synthetic resin to melt it, then extruding fiber filaments through nozzles to stack them together, and fusing their junction points.