Ultrasonic Spot Metal Welder 1)Frequency:35KHz 2)Power:1500W 3)Voltage:220V CE Approved Ultrasonic Spot Metal WelderFeaturesl the welding time is short, ... , brass, redcopper, bronze, nickel, gold high-conductivity metal weldingSolid solder joint, solder joint resistance is small, no ... , easy to operate.Welding range:Battery pole piece of metal welding processes: aluminum + nickel, nickel + copper, ...