1,With an advanced integrated circuit, functional modules and the new technology of high-performance switching for convenient adjustments, this unit is easy to learn how to use. 2,Independent development of mature technology, high reliability, easy operation and high efficiency. 3,The microprocessor control system optimizes the welding parameters. Using advanced digital control technology and humanized design, select the suitable welding current to achieve the best welding results. 4,Voltage auto detect function. 5,Equipped with feeder of frequency conversion and speed governing. 6,Practical, reliable and advanced technology.