Array Ultrasonic Transducer 1, Replaceable,expandable 2, Customized to solve different problem 3, Multi-frequency is avaliabl 40K 500W Ultrasonic Vibration Box Features:1, Submersed in liquid, by bottom-mounting or wall-mounting.2, Replaceable, expandable, renewable by submersible transducer module.3, Customized to solve different problems with different frequency, power, shape, size etc ...