We are a professional manufacturer of ultrasonic mould, and this ultrasonic ultrasonic mould can be especially used for phone plug welding. 1. we will choose the high quality ultrasonic mould material for phone plug 2. We can manufacture ultrasonic mould according to phone plug samples or drawing. 3. The welding effect is good, and will not break the electronic components inside of the phone plug. 4. we will do the ANSYS testing for our moulds 5. The ultrasonic mould is strong and durable. Model: MY-MJ1520-8-S Frequency: 15-40k Power: 800-8000w Voltage: 110V/220V