... cleaning, cleanliness higher. 4. Years of continuous improvement, thoroughly tempered, quality, rock-solidAdvantages1:low power consumption, firm welding, low noise, small ... ultrasonic circuit control 3: with pedal switch to convenient control 4: compacted, space-saved, convenient to transportparameterModelKLC-3028/KLC-5028 ... us for updated Ultrasonic Spot Welder,Hand-Hold Spot Welding Equipment