The first type: False labeling (false promotion deceiving consumers)
       

        Ultrasonic cleaning frequencies of 28KHZ are often used to clean large, heavy parts or workpieces made of high-density materials.
       

          Kemeng preferred 40/42KHz frequency, suitable for cleaning household glasses, jewelry and other daily necessities. Its moderate penetration and density can not only ensure the cleaning effect, but also will not damage the surface of the objects.