Roof waterproofing uses tiles made of TPO composite steel plates because TPO (thermoplastic polyolefin) materials have excellent waterproof performance, weather resistance and UV resistance. Compared with traditional materials, TPO waterproofing layers are more durable and environmentally friendly, and do not contain harmful substances. Composite steel plates provide strength and structural stability, making tiles not only light and easy to install, but also able to withstand extreme weather and long-term loads. In addition, TPO composite steel plate tiles have a long service life and low maintenance costs, making them suitable for long-term protection needs of industrial, commercial and residential building roofs.