1. Through ultrasonic cleaning technology refers to the use of ultrasonic waves with a frequency of 28KHz for cleaning. 2. The cleaning system generally consists of a spray system, a nozzle rotating device, a phosphating system, an automatic temperature controlled heating system, a wind cutting and water blowing system, etc. 3. For certain specific cleaning objects, there is also a hot air drying system, a dedicated cleaning rack (basket), and a filtration and circulation system for cleaning solution.