High-temperature resistant and flowable, but brittle and prone to fracture at low temperatures, simple construction, and no pollution. Utilizing BFT’s professional expertise to explore the latest discoveries in flat roof waterproofing. We comprehensively analyzed key factors such as plastic waterproof membrane materials, expanded welding parameters, and the triangular relationship between welding parameters. We achieved the best test weld results and paid attention to critical factors such as temperature, speed, and pressure to enhance the durability and sustainability of flat roofs. BFT has deeply researched seam connection technology to improve the efficiency and quality of the modern roofing waterproofing industry.