... .It adopts MOSFET invert technology, high frequency arc start design2.It can balance automatic when voltage is waving, ... quality and energy-saving5.It is easily arc, small flash, low noise stable welding arc, wonderful welding shape6.Being able to continue ... of acid or alkaline jointing with welding rod Model(Unit) ARC-160ARC-180ARC-200ARC-250Power Supply Voltage(V) AC220V±15%AC220V ...