Chongqing Yunda Machinery & Electronics Manufacturing Co., Ltd. is a high technology joint-stock enterprise, which mainly specialized in welding equipmentâ??s R&D, manufacturing and quality service in China. Its products get possession of self-owned intellectual property rights. The firm, Concentrated on R&D and manufacturing the advanced technology, good quality, high Energy conservation and Environmental protectionâ??s products of IGBT welding inverter, energy driven welding generator as well as special maintenance products for railway system. Passed ISO9001, ISO14001, CE, CCC and CRCC certificates, our products are widely used for shipbuilding, metallurgy, pipeline, chemical pressure vessel plant, steel structure, motor vehicle manufacturing, electricity construction.