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Handheld Ultrasonic Spot Welder 28khz Portable Welding Machine For Plastic Manure Belt SplicingUltrasonic welding principle:Hand-held ultrasonic welding machine, several generally out there operating frequency, 28KHz, 30KHz, 36KHz, 40KHz. The precept is the use of sound waves reached the height function of the space between the plastic, in the case of pressure, so that the two fusible aspects which are part of the plastic components in touch with one another to provide the high-speed friction melts, the touch surface of the plastic fusion, obtain the point of processing. Machine Features: 1. Hand-held design, welding convenient, compact machine design, small size doesn't occupy space. 2. Frequency: 28KHz. 3. Slight noise, paintings environmental, no pollution. 4. Welding fast, each welding time zero seconds. 5. High welding quality, high-quality 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, mobile phone antennas, headsets and other communications products, and microelectronics product can be updated at any time, please use the particular product since the standard.