Today’s office buildings, with their sophisticated information technology requirements, high occupancies and open plan offices, require the indoor conditions to be kept at highest standards to ensure efficient office work production. Recent studies confirm there is a direct relation between good indoor air quality in offices and occupant health and hence, company profits. Okutan Engineering has extensive knowledge on the latest office building technologies such as displacement ventilation and has broad experience on tenancy / landlord requirements for planning and tender in international projects.