Ever wondered how the SWT-NS700 hot air welding machine performs in real-world waterproofing projects? In this video, we showcase genuine customer feedback and demonstrate how this high-power, high-speed welder handles HDPE geomembrane from 0.5 to 3.0 mm thickness. Watch as we walk through its operation, temperature control, and applications in water conservancy, landfills, and construction—giving you practical insights into its efficiency and reliability.