TIG 200A Argon welder 1.standard Power high duty cycle 2.carried easily for small volume ... 200A Inverter Argon welder with high duty cycle 1.V-Mos tube inverter, high working frequency, high efficiency, no noise.2. ... Compact and portable.3.High frequency and high voltage arc initiating, high success rate.4.With the perfect ... :Factory Tour : TIG-200A Inverter Argon welder with high duty cycle