H2O2 High Pressure Dry Fog Sprayer
The spray process is accomplished by diffusion of dry fog into the area to be sterilized. When the average diameter of a droplet is less than 10 microns, the ejected fog can be called dry fog.
https://www.sedmachinery.com/solid-preparation-equipment/vacuum-drying-machine/h2o2-high-pressure-dry-fog-sprayer.html