The ozone generators of Colombo Green Industries are state-of-the-art machinery built in Italy , with high quality materials and able to deliver pure ozone , without dangerous toxic products. Our ozone generators for professional use sanitize environments from viruses , bacteria and mold up to 99.6%. They are resistant and designed to last over time, keeping their effectiveness intact. The very high and rigorous standards of design and construction of our generators make these machines a true elite product in the Italian market. Unlike the classic generators on the market, the Colombo Green Industries line of generators is designed and built to deliver a better and more powerful concentration of ozone, ensuring not only safe, correct and effective sanitation, but also lasting. All the generators come with a 2-year warranty.