Product Description: 1. Small, easy to operate, take up less space. 2. Whether hand-or foot control can be easily converted into a foot pedal. 3. Frequency can be switched 4. Frequency: 28 35KHz 5. Output power: 200 1000 Watts Scope: riveting, spot welding, the file folder location.Features: 1) Use of piezoelectric ceramic sensors, with a stable output 2 with a good circuit), it is easy to operate 3) In dealing with ways to reduce the professional ability and less, it is easy to operate 4) used in 1 - 15 mm of welding 5 cases of riveting, spot welding and round points, all kinds of welding technology) 6) The full set of components with fine