ultrasonic cleaning machines there are various types of industrial cleaning agents used, but there is no all-purpose cleaning agent. Generally, they are specialized types and should be adapted to the different materials of the objects to be cleaned and the different cleaning requirements. For different types of dirt, it is best to conduct process tests with an ultrasonic cleaner and then make a selection. However, when making a selection, several main points should be considered:       1. The main components of the cleaning agent: The main component of the detergent is sodium dodecylbenzoate or sodium dodecylbenzene sulfonate. 2. Various physical properties of the cleaning agent; 3. Main characteristics and precautions of cleaning agents; 4. The scope of application of the cleaning agent (main uses, dirt objects, etc.); 5. Cleaning conditions, methods and implementation possibilities of the cleaning agent; 6. Liquid discharge and waste liquid treatment methods; 8. The cost of cleaning agents; 9. Regulations concerning cleaning, etc.