Sebastian Wieremiejczyk - Usługi informatyczne.

61.90.Z - Other telecommunications activities

42.22.Z - Works related to construction of telecommunications and electricity lines

58.11.Z - Book publishing

58.12.Z - Publishing of directories and registers (e.g. street, phone directory)

58.13.Z - Publishing of newspapers

58.14.Z - Publishing of journals and periodicals

58.19.Z - Other publishing activities

58.21.Z - Publishing of computer games

58.29.Z - Other software publishing

59.11.Z - Motion picture, video and television programme production activities

59.12.Z - Motion picture, video and television programme post-production activities

59.13.Z - Motion picture, video and television programme distribution activities

59.14.Z - Motion picture projection activities

59.20.Z - Sound recording and music publishing activities

60.10.Z - Radio broadcasting

60.20.Z - Public and licence television programmes broadcasting

61.10.Z - Wired telecommunications activities

61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities

61.30.Z - Satellite telecommunications activities

62.01.Z - Computer programming activities

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

63.91.Z - News agency activities

63.99.Z - Other information service activities not elsewhere classified