Michał Walczak

62.09.Z - Other information technology and computer service activities

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

42.21.Z - Works related to construction oftransmission pipelines and distribution networks

42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified

43.12.Z - Site preparation

43.21.Z - Electrical installation

43.22.Z - Plumbing, heat and air-conditioning installation

46.51.Z - Wholesale of computers, peripheral equipment and software

47.41.Z - Retail sale of computers, peripheral units and software in specialised stores

47.91.Z - Retail sale via mail order houses or via Internet

47.99.Z - Other retail sale not in stores, stalls or markets

62.01.Z - Computer programming activities

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

63.99.Z - Other information service activities not elsewhere classified

70.21.Z - Public relations and communication activities

71.11.Z - Architectural activities

71.12.Z - Engineering activities and related technical consultancy

73.11.Z - Advertising agencies activities

73.12.A - Intermediation in the sale of time and place on advertising aims in the radio and television

73.12.B - Intermediation in the sale of the place on advertising aims in printed media

73.12.C - Intermediation in the sale of the place on advertising aims in electronic media (Internet)

73.12.D - Intermediation in the sale of the place on advertising aims in other media

73.20.Z - Market research and public opinion polling

74.20.Z - Photographic activities

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

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

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

95.11.Z - Repair and maintenance of computers and peripheral equipment