... proof. 2.DC hand electrode 3.Use MOS/IGBT technnology 4.Less splash, good weld appearance MMA200 ... of MMA-2001.Adopt with advanced MOS/IGBT inverter technology, save energy, protect the environment, light ... .4.Strong welding permeability, less splash, good weld appearance, sound-proof.5.Suit for all kinds ... acid electrodes.6.Be able to long-distance weld all kinds of material, such as stainless steel ...