Handheld Ultrasonic Spot Welder 28khz Portable Welding Machine For Plastic Manure Belt SplicingUltrasonic welding principle:Hand-held ultrasonic welding machine, several commonly out there working frequency, 28KHz, 30KHz, 36KHz, 40KHz. The precept is the use of sound waves reached the peak function of the space between the plastic, within the case of pressure, simply so the 2 fusible points which can be a part of the plastic facets in contact with one another to supply the high-speed friction melts, the contact floor of the plastic fusion, obtain the point of processing. Machine Features: 1. Hand-held design, welding convenient, compact machine design, small length would not occupy space. 2. Frequency: 28KHz. 3. Slight noise, work environmental, no pollution. 4. Welding fast, each welding time zero seconds. 5. High welding quality, great 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 assorted communications products, and microelectronics product could be updated at any time, please use the actual product because the standard.