28khz High Frequency Portable Ultrasonic Plastic Spot Welding Machine For PP PE PVC ABS Material FusionUltrasonic welding principle:Hand-held ultrasonic welding machine, several generally accessible 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 two fusible facets which might be a part of the plastic components in touch with each other to produce the high-speed friction melts, the touch floor of the plastic fusion, achieve the purpose of processing. Machine Features: 1. Hand-held design, welding convenient, compact mechanical device design, small size 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, high-quality welding results. Applications: 1. Suitable for spot welding products Φ1-15mm. 2. Suitable for riveting, welding, dots, folder location. 3. For the SD card, U disk, cellphone antennas, headsets and diverse communications products, and microelectronics product may be updated at any time, please use the actual product because the standard.