Geotextile membrane (also known as waterproofing membrane), thickness ranging from 0.2-3mm, with a thickness above 0.8mm referred to as waterproof board. It is a waterproof and barrier material made primarily from high-quality polyethylene raw resin. The main component is 97.5% high-density polyethylene, with approximately 2.5% of carbon black, anti-aging agents, antioxidants, UV absorbers, and stabilizers as additives, offering strong waterproof and isolation properties. The geotextile membrane is currently mainly used in landfill sites.