Ultrasonic Transducers Name Method Eg, UCE-6845D-20LA PZT8 UCE mean our company logol. 68 is stand for the dimetions of radiation head, 45 is stand for the dimetions of the piezoelectric ceramic,PZT8 is mean the material of piezoelectric ceramic,PZT8 is yellow ceramic,PZT4 is black. Ultrasonic Transducers is one of main products of at UCE ultrasonic,which used the piezoelectric effort to realize transduction between electric and sound energy,also named as BLT transducer,ultrasonic transducer normally used in ultrasonic cleaning industry,high power ultrasonic etc.