... efficiency due to advanced technology of inverting c Inverter DC Welding Machine TIG250I. Advanced design, high efficiency, small volume, ... voltage pulsation, stable welding current,easy arc initiation, fast dynamic response, no welding noise, low weldingspatter, smooth welding appearance. IV. ... argon as protective air so as to assure neat welding appearanceVIII. made in compliance with CE and Rohs ...