water-based polyurethane waterproof coating is a kind of waterproof material. It is an environmentally friendly polymer elastic waterproof material. The product is non-toxic and tasteless, has good bonding and impermeability, and is suitable for mortar cement base stone surfaces, stone materials, and metal products. It has strong adhesion, stable chemical properties, can withstand long-term sunlight exposure, has high strength, large elongation, good elasticity and good waterproof effect.