We are a professional manufacturer of ultrasonic horn/mold, and this ultrasonic ultrasonic horn/mold can be especially used for plug welding. 1. we will choose the high quality ultrasonic mold material for plug 2. We can manufacture ultrasonic mold according to plug samples or drawing. 3. The welding effect is good, and will not break the electronic components inside of the plug. 4. we will do the ANSYS testing for our molds 5. The ultrasonic horn/mold is strong and durable. Model: MY-MJ1520-9-S Frequency: 15-40k Power: 800-8000w Voltage: 110V/220V