Leszek Kowalski

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

26.20.Z - Manufacture of computers and peripheral equipment

43.21.Z - Electrical installation

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

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

61.10.Z - Wired telecommunications activities

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

62.01.Z - Computer programming 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

63.99.Z - Other information service activities not elsewhere classified

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