See Sharp, Jan Duniec

62.01.Z - Computer programming activities

18.12.Z - Other printing

22.19.Z - Manufacture of rubber items

22.29.Z - Manufacture of other plastic products

26.20.Z - Manufacture of computers and peripheral equipment

26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation

32.40.Z - Manufacture of games and toys

33.20.Z - Installation of industrial machinery and equipment and outfit

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

58.11.Z - Book publishing

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

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

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

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

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

95.12.Z - Repair and maintenance of (tele)communication equipment

95.29.Z - Repair of other personal and household goods