... switch 5.ISO9001,UKAS,CCC,CE WSEM series of digital controlled IGBT inverter (square wave) DC ... , simplifies the design of the main control panel, and increases the reliability of products. 3.The ... human-computer interface makes the process of parameters adjustment simple and covenient, and also ... have memory function. 4. The adjustment range of cleaning area is wide ,getting the optimal welding ...