... 4. reasonable price at quality MMA WELDING MACHINE WITH CCC&CE APPROVED 1.Reactive power correction, MOSFET, AC ... with 100 kHz high frequency;2.Compact structure, stable welding current, steady and intensive arc, reliable and durable, easy for maintenance;3.Excellent control ... over-current protection, under-voltage protection, pedal control interface for safe operation;5.Complete accessories: welding ...