Sinoceramics has been mass producing piezo benders over the last few decades. The piezoelectric sound elements are the core of every piezoelectric buzzer, alarm, and other sound generators. By using an alternating electric signal, the sound element produces vibration. Our bimorph actuators have the unique ability to use an electric voltage to elongate one side while contracting the other. Sinoceramics uses specific materials to achieve large deviations with low voltages.