Cyrus Sidor - Engineering and Aerospace

52.23.Z - Service activities incidental to air transportation

41.20.Z - Building works related to erection of residential and non-residential buildings

43.99.Z - Other specialised construction activities not elsewhere classified

71.12.Z - Engineering activities and related technical consultancy

71.20.B - Other technical testing and analysis

72.19.Z - Other research and experimental development on natural sciences and engineering

85.53.Z - Out-of- school forms of driving education

85.59.A - Teaching of foreign languages

85.59.B - Other out-of-school forms of education, not elsewhere classified