Ozone is a broad-spectrum, efficient, fast fungicide. It can kill various germs, virus rapidly, remove the toxic substances in the water and reduce the cancerogen in water. There will be a certain concentration of ozonated water produced when ozone gas dissolves in water, which has stronger and faster sterilization ability than ozone gas with quick decomposition, no pollution and residue, and can replace the traditional peracetic acid, chlorine, hydrogen peroxide, potassium permanganate disinfectant, etc.