Frequency difference: the frequency of low-frequency ultrasonic cleaner is generally 20-50khz, and the frequency of high-frequency ultrasonic cleaner is generally 50-200khz; The most frequently used ultrasonic cleaner in industry has a low frequency of 28KHZ, and the most frequently used high-frequency ultrasonic cleaner has a frequency of 80khz. The difference of action effect: in the case of ultrasonic low frequency, the bubble size generated in the liquid is large, and the force on the cleaning object is stronger. At the same time, the low frequency is more likely to damage the surface of the corroded workpiece; High frequency penetration of ultrasonic cleaning machine is strong, and complex blind holes can be cleaned. Difference of noise: Low frequency noise is higher than high frequency noise. Difference of applicable products: low-frequency ultrasonic cleaning machine is applicable to the surfaces of large parts, workpieces with high dirt surface bonding degree, and objects with low surface gloss requirements, such as vehicle engines, valves and other large workpieces; High frequency ultrasonic cleaning machine is suitable for workpieces with high requirements for surface gloss and more complicated blind holes, such as electronic parts, magnetic materials, silicon wafer coating, etc.