PVC waterproofing coil composite steel plate combines the strength of steel plate with the excellent waterproof performance of PVC waterproofing coil, forming a composite material that is both durable and functional. This material has excellent waterproof and anti-penetration properties, which can effectively prevent water intrusion and ensure the long-term safety and stability of the building structure. At the same time, the PVC layer has the advantages of UV resistance, strong weather resistance, and corrosion resistance, and is particularly suitable for environments with high humidity or strong corrosion, such as chemical plants and underground buildings. In addition, the high strength and impact resistance of the composite steel plate enable it to effectively withstand external pressure and wear during construction and long-term use, thereby extending its service life. In short, this composite material not only improves the waterproof effect, but also greatly improves the overall durability and maintainability.