... : 1,Replaceable 2,Customized to solve different problems 3,Multi-frequency is avaliable Ultrasonic Ceramic Transducers:Features:1, Submersed in ... liquid, by bottom-mounting or wall-mounting2, Replaceable, expandable, renewable by submersible transducer module3, Customized ... number for after sale serviceCompany Profile Ultrasonic Ceramic Transducer CN28-1800