Ozone air sterilizers are expected to provide four distinct services essential for mankind: Absolute deodorization - Completely Odour-free indoor areas (Lounges, Banquets, Butchery, Housekeeping, Hotel Corridor, Garbage Rooms, etc) Our Certificates from Government Hospitals (attached in this mail) show that the product is capable of killing foul odour even in Mortuaries. Increase Shelf-life of Food in Hotel Kitchens Smoke Suppression (Smoking Rooms, Bars, Pubs, Restaurants, etc) Aerial sterilization - killing of aerial infection & prevention of cross-contamination - in your Kitchen, food storages, etc. (Please view our Test Reports on the level of destruction of aerial bacteria) Increasing active aerial oxygen in percentage - for healthier air to tackle "Sick Building Syndrome" & improve work quality from employees. (A condition affecting office workers, typically marked by headaches and respiratory problems, attributed to unhealthy or stressful factors in the working environment such as poor ventilation).