welding machine 1. Adopting the inverter soft switch technology, improved the IGBT reliability 2. Important elements like IGBT, fast recovery diode, integrated circuit and relay are the world famous brand, which decrease the machine fault rate. 3. Large scale and pipeline producing, the machine has excellent performance and competitive price 4. Wide voltage design, the machine can work normally at 320 440V 5. Special design for dust-proof, damp-proof and corrosion-proof, the machine can bear long time use 6. Special design for thin plate, the machine has good dynamic characteristic and seam appearance, stable arc, little spatter.Main usage: Steel furniture producing, vehicle, motorcycle and agricultural products producing and maintain; steel frame, door and window producing, hardware and nearly all the carbon steel thin plate and wearing welding