M.G.H.J. Grzegorz Klimczyński

62.01.Z - Activities related to programming, IT consulting, and related activities

28.23.Z - Manufacture of office machinery and equipment, excluding computers and peripheral equipment

33.12.Z - Repair and maintenance of machinery

43.21.Z - Installation of electrical systems

43.22.Z - Installation of plumbing, heating, and air-conditioning systems

43.29.Z - Specialized construction works

43.39.Z - Specialized construction works

46.51.Z - Wholesale trade

46.66.Z - Wholesale trade

47.19.Z - Retail trade

47.41.Z - Retail trade

58.29.Z - Publishing of other software

62.02.Z - Activities related to programming, IT consulting, and related activities

62.03.Z - Activities related to programming, IT consulting, and related activities

62.09.Z - Activities related to programming, IT consulting, and related activities

63.12.Z - Services related to computing infrastructure, data processing, website management (hosting), and other information services

63.91.Z - Portal and search engine activities

63.99.Z - Services related to computing infrastructure, data processing, website management (hosting), and other information services

77.33.Z - Rental and leasing of office machinery and equipment, including computers

81.30.Z - Landscaping services

95.11.Z - Repair and maintenance of computers, personal and household goods, and motor vehicles, including motorcycles

95.21.Z - Repair and maintenance of electronic equipment for general use

95.22.Z - Repair and maintenance of household appliances and equipment for household and gardening use