28KHZ 400-watt transducer, a practical choice for balancing frequency and power. Medium-precision processing with 28KHZ frequency adaptation and moderate amplitude; A power of 400 watts can meet the requirements of conventional load components. It can efficiently convert electrical energy into stable ultrasonic vibration, with reliable weld seams, strong heat resistance and support for continuous operation. It is suitable for scenarios such as welding small and medium-sized plastic parts and connecting hardware accessories, taking into account both processing stability and ost-effectiveness.