DC MMA welding machine 1.Adopt with advanced MOS/IGBT inverter technology, save energy, protect the environment, light and compact, portable, accord with EMC standard. 2. Current can be adjusted stepless, high efficiency. 3. Fan-cooled, automatic protection of over-voltage and over-current, thermostatic protection, moveable welding cable. 4. Strong welding permeability, less splash, good weld ...