High Frequency Welding Machine, Ultrasonic Welding Machine, Plastic Welding Machine manufacturer / supplier in China, offering Fully Automatic PVC Cylinder&Tube Curling Machine for Double Ends Curling& Both Sides Curling, Precision High-Frequency Welding Machine for PVC Tarpaulin Waterproof Seams & Reinforcement, Professional-Grade PVC Roofing Membrane Welding Machine for House Roof Waterproofing Projects and so on.