AC DC pulse TIG MMA welding machine Inverter IGBT argon welder 200 amp weld aluminums stainless steel copper FEATURES: -IGBT inverter,high frequency soft switches, high efficiency and reliability. -Welding parameters can be set accurately. -AC square wave is especially suitable for welding aluminum alloy products.  -DC square wave for welding stainless steel, alloy steel, carbon steel, copper and other non-ferrous metals.  -Multifunction: MMA,DC TIG, AC TIG, DC pulse TIG welding and AC pulse welding.  -Easy arc starting, stable welding current, excellent square wave.  -Fast response, little splashing, excellent welding appearance. -Stable low current welding, minimum current up to 5A .   Accessories: FOOT PEDAL IS NOT ALLOWED FOR WSME-200  SINGLE PHASE 220V FOOT PEDAL IS ALLOWED FOR WSME-250 THREE PHASE 380V   FOOT PEDAL IS OPTIONAL to buy for WSME-250:   Top quality key compents: 1.Single tube IGBT:Fairchild,Renesas,Infineon. 2.Mosfet:Fuji, Toshiba. 3.Silan diode. 4.SMT PCB 5.Amorphous alloy transformer material. 5.100% sure all the compents are NEW material!   More welders are available: OUR FACTORY:   Shanghai zhengtai welding equipment CO.,LTD  SINO-USA joint Venturewhich is Established in 1993, One of the TOP TEN Enterprises in China Welding Manufacturing Industry, new high-tech leading and specialized in study, developing and production for AC, DC, Inverter ARC,TIG,MIG and Special welders.   It covers an area of 30,000 square meters. The existing staff is more than 200 people including 20% engineers and technicians. the annual output is more than 50000 sets.      The company has superior production equipment and quality control equipment. It adopts the modern enterprise management system and owns ISO9001:2000 quality management system certification. All products have the national "CCC" certification, and the European "CE" certification .Some products have the Canadian "CSA"certification and American "UL" certification.       Usually we offer following four types packaging   Exhibitions: