Mariusz Janczewski

74.90.Z - Other professional, scientific and technical activities not elsewhere classified

46.19.Z - Agents involved in the sale of a variety of goods

70.22.Z - Business and other management consultancy activities

73.11.Z - Advertising agencies activities

73.20.Z - Market research and public opinion polling

81.21.Z - General cleaning of buildings

81.22.Z - Specialised building and industrial cleaning activities

82.11.Z - Office administrative service activities

82.19.Z - Photocopying, document preparation and other specialised office support activities

82.30.Z - Organisation of conventions and trade shows

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

96.09.Z - Other personal service activities not elsewhere classified