MAR series is a professional ultrasonic screening system, which is composed of ultrasonic generator and screen transducer. It can meet the use range of 28 ~ 38kHz frequency. The system can automatically track the best resonant frequency and compensate for the detuning caused by heating and other reasons; It can also be added to any new or existing vibrating screen;The amplitude range of Mar series ultrasonic screening system is continuously adjustable from 20% to 100%, which is different from the shortcomings of traditional generators that are difficult to work with low amplitude. It can remove the easily agglomerated and viscous powder from the screen surface, increase the screening capacity, improve the powder screening efficiency, and reduce the screening mesh to 20 microns (635 mesh) The whole ultrasonic screening system can not only greatly improve the quality of powder products, make the screening particle size more accurate and efficient, but also reduce the screen loss and the time of repair and replacement, which is conducive to good cost control. The main application fields are classification, protective screening, dust removal and typical analytical screening in the laboratory.