The TPO waterproof membrane on the surface of Himei waterproof tiles is weldable. Its advantage is that through hot air welding technology, strong joints can be quickly achieved under low temperature conditions. The welding quality is stable and reliable, and the construction is convenient and fast. In addition, the TPO material itself has good thermoplasticity, does not produce harmful gases during the welding process, and is environmentally friendly and safe, thus significantly improving the overall performance and durability of the waterproofing system.