For 40KHz ultrasonic transducers, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our 40KHz ultrasonic transducers has been well received by many customers and enjoyed a good reputation in many countries. Piezo Hannas 40KHz ultrasonic transducers have characteristic design & practical performance & competitive price, for more information on the 40KHz ultrasonic transducers, please feel free to contact us.