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28khz Portable Handheld Ultrasonic Plastic Welder For Manual Welding Polypropylene PP Poultry Manure BeltUltrasonic welding principle:Hand-held ultrasonic welding machine, several generally available working frequency, 28KHz, 30KHz, 36KHz, 40KHz. The principle is the use of sound waves reached the peak function of the distance between the plastic, within the case of pressure, in order that the 2 fusible features which might be part of the plastic elements in touch with one another to produce the high-speed friction melts, the contact surface of the plastic fusion, obtain the point of processing. Machine Features: 1. Hand-held design, welding convenient, compact mechanical device design, small length does not occupy space. 2. Frequency: 28KHz. 3. Slight noise, work environmental, no pollution. 4. Welding fast, every single welding time zero seconds. 5. High welding quality, fine welding results. Applications: 1. Suitable for spot welding merchandise Φ1-15mm. 2. Suitable for riveting, welding, dots, folder location. 3. For the SD card, U disk, cellular telephone antennas, headsets and diverse communications products, and microelectronics product could be up to date at any time, please use the particular product because the standard.