We, Nanorex, are specialized in well-being ventilating systems for the improvement of indoor air quality. In the meantime, we put our focus on the development of oxygen generators and on the production of the relevant products and modules, but recently, we are increasing our emphasis on "Heat Recovery Ventilation " that has improved the forced air supply and exhaust system. In addition, we are expanding our business fields into environmentally friendly items, such as water and energy saving fields to which nano materials and biochemical technologies are applied, a health care field, and an alternative energy field. We promise to continuously open future environment useful for mankind by connecting nano and bio technologies with environment.