Multifunctional TIG/MMA/CUT 3 in 1, easy to operate, portable, durable Technical data of plasma welding CT520About the products -Our D series ... made with advanced inverter technology -High frequency(as high as 100HZ) -High power factor V-MOS, reduce the voltage and rectifies ... -Working with CUT, due to rapid-circulation, turn into strong plasma ARC -CT312/416 is wildly used in welding and cutting ...