Low frequency (17~23KHz): If the dirt to be cleaned is heavy or difficult to clean, and the impact of the explosion on the surface of the object to be cleaned is not great, the low frequency series transducer should be selected. Commonly used industries are: magnetic industry, auto industry, textile industry, etc. Note that this series is noisy and is best soundproofed.

Medium frequency (25~28KHz): If the dirt to be cleaned is slightly heavy or the cleaning is difficult, and the impact of the explosion on the surface of the object to be cleaned is not great, the medium frequency series transducer should be selected. This series of industries is the most widely used, common: mechanical processing industry, electroplating industry, catering industry and so on.

Medium and high frequency (33~60KHz): The medium and high frequency series transducers should be selected when the dirt to be cleaned is light, easy to clean, or when the impact of the explosion on the surface of the object to be cleaned is required. Commonly used industries are: precision parts, glass glasses, electronic components, circuit boards, etc.;

High frequency (68-200KHz): The dirt to be cleaned is very light and easy to clean. When it is required to prevent any damage to the surface of the object to be cleaned by explosion, the high frequency series transducer should be selected. Commonly used industries are: semiconductors, special high-precision parts, etc.