Adding an anti-corrosion layer on the back of Himei waterproof tiles can significantly improve its durability and service life and prevent corrosion caused by moisture and oxidation. This not only effectively protects the tiles from harsh weather conditions, but also reduces the frequency of maintenance and replacement, reducing long-term costs. In addition, the addition of the anti-corrosion layer also improves the overall waterproof performance of the waterproof tiles, ensuring the safety and stability of the building structure.