... question about ozone safety has been pertaining to the overuse in occupied areas. That's why we have specifically designed low ... purification.Second, Ozone can be used at very high levels, in unoccupied rooms, to help sanitize them of mold, bacteria , ... , resistant to moisture, earthquake, maintenance-free;03. Modular with plug-in design, easy maintenance, reliability;04. Use Ozone-specific air pump ...