Oxyfresh is a sterilization and deodorization air disinfection machine, could be used as an air freshener which removes odour and indoor pollutant. One of the efficient and eco-friendly way to make safe and sterile indoor. Ozone generator works not only for air but also for water. Ozone is a powerful oxidant that deodorizes, disinfects, and sanitizes water/air. The generator’s oxidizing property helps to destroy the biological structure of bacteria, viruses and other microorganism in a relatively short period of time, making it unable to survive. There are many compounds that use oxidative properties to kill microorganism to achieve sterilization, such as common chlorine gas, bleach, potassium permanganate, etc.