Shanghai Wit force business company development, trial production of high-tech, high-tech products. The company's inverter welding machine have been formed, the welding line, arc welding series, CO2 gas shielded arc welding and submerged arc series dominated series, using the most advanced inverter technology, power devices IGBT module used in all the switching frequency of up to 20KHZ-30KHZ, the control circuit fully integrated digital circuits, all imported components, advanced technology, process improvement, performance, high reliability, is the ideal alternative to traditional welding products. In addition, the company also design and manufacture a variety of professional straight seam welding, seam welding ring plane and other plane for various purposes and in accordance with custom.. (more>>)