1, plastic welder hand-held ultrasonic machine 2,Original Japan NTK converter, stable output 3,easy to operation The featuer of plastic welder hand-held ultrasonic machine 1, It is small and convenient for working,Operate flexible and convenient ,handle type design.2, Frequency is 28KHz/35KHz with original Japanese NTK coverter.3, Automatic frequency tracking.4, Especially suitable for 1-15mm ...