Handheld Ultrasonic Welding Machine power:300w frequency:35khz weight:14KG Digital Ultrasonic Generator Applications:Mainly ultrasonic welding, ultrasonic riveting, ... quality automatic shocks constant balanced line, auto-recovery function of frequency. 4, Japan, Matsushita were sector ... safe, durable, easy operation, in full accordance with the design of industrial safety standards, a well- ...