MDZ series frequency inverter spot welder Features ★ IF DC inverter spot welder is the current international advanced resistance welding products. ★ low operating costs, power savings, high-energy, high-quality, high efficiency, with unparalleled welding stability. ★ balanced three-phase power input, power factor up to 95%, the secondary loop is almost no sense of energy loss. ★ lower welding current and electrode force, electrode life greatly improved, reducing the electrode grinding time and costs. ★ more accurate, faster and more complete control and analysis of the welding parameters, welding time is short, greatly improving production efficiency. ★ widely used for all kinds of metal products, especially for aluminum welding products more good results. .