... technology, advanced electronic circ WS-Z series DC inverter TIG/MMA welder(WS200Z) Function and Specialty.1. Controled by ... advanced invert technology, suited for all of TIG and MMA welding.5.Easy arc starting, steady ... steadily, high efficiency, energy saving, light and portable. ModelSpec.WS160ZWS200Z MMATIGMMATIGRated input power capacity3.93.94. ... 5-10 WS-Z series DC inverter TIG/MMA welder(WS200Z)