... welding machine suitable for Tent, covers, PVC door and widow, water bad and swimming pool and so on. High frequency canvas welding machine1 ... moving after weld, with precise position, no need move material and machine.3. Speed:5-10 meters per minute4. NL5557 ... .5. Usage: Tent, covers, PVC door and widow, banners, water bad and swimming pool and so on include PVC material products.6. Parameter:MODEL ...