... , handle of non-woven bags and so on Features of ultrasonic spot welding machine :1. Japanese NTK transducer, imported cylinder, ... , make pressure exerted more evenly, higher welding precision;3. 2000 W power output, suitable for large plastic welding with good ... Smart structure, reasonable design and beautiful appearance.Working Detail of ultrasonic welding machine:1.Capacity: welding time is only 0.01 ...