Thermoplastic polyolefin (TPO) waterproofing membrane is a sheet-like thermoplastic elastic waterproof material made from resin, produced through chemical copolymerization and specific formula extrusion and calendering. It has received high praise as a new waterproof material in recent years both domestically and internationally. Depending on the application scenario and construction process, the material is available in three types: H, L, and P. Product features include good weather resistance, stability, long service life, excellent physical properties, high tensile and tear strength, resistance to mold and algae growth, chlorine-free components, good environmental performance, no open flame construction, no smoke and dust emissions, environmentally friendly, good low-temperature performance (bending without cracking at -40°C), strong acid and alkali corrosion resistance, suitable for exposed use, and high sunlight reflectivity, which helps reduce indoor temperature.