KNK SYSTEM KRZYSZTOF SADOWSKI

71.20.C - Other technical testing and analysis

26.51.Z - Manufacture of measuring, controlling, and navigation instruments

27.90.Z - Manufacture of other electrical equipment

33.20.Z - Installation of industrial machinery, equipment, and devices

43.21.Z - Installation of electrical systems

47.12.Z - Other non-specialized retail trade

47.40.Z - Retail sale of information and communication technology equipment

47.52.Z - Retail sale of small metal products, building materials, paints, and glass

47.54.Z - Retail sale of electrical household appliances

47.55.Z - Retail sale of furniture, lighting equipment, tableware, and other household articles

47.69.C - Retail sale of other cultural and recreational products, not elsewhere classified

47.79.C - Retail sale of other used products

55.10.Z - Hotels and similar accommodation establishments

55.20.Z - Tourist accommodation and short-term accommodation facilities

55.90.Z - Other accommodation services

62.20.A - IT consulting and IT equipment management activities

62.20.B - IT consulting and IT equipment management activities

62.90.Z - Other IT and computer-related services

63.10.D - Services related to computing infrastructure, data processing, website management (hosting), and related activities

68.20.Z - Rental and management of own or leased real estate

70.20.Z - Business and management consultancy activities

71.12.B - Engineering activities and related technical consultancy

72.10.Z - Scientific research and development in natural and technical sciences

74.99.Z - All other professional, scientific and technical activities, not elsewhere classified

80.09.Z - Other security activities, not elsewhere classified

85.59.D - Other non-school forms of education, not classified elsewhere