JACEK KOŁODZIEJSKI

43.21.Z - Installation of electrical systems

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

35.14.Z - Distribution of electricity

41.10.Z - Construction work related to the construction of residential and non-residential buildings

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

43.29.Z - Specialized construction works

43.91.Z - Masonry works

43.99.Z - Other specialized construction works, not classified elsewhere

46.12.Z - Activity of agents involved in wholesale trade of fuels, ores, metals, and industrial chemicals

46.15.Z - Activity of agents involved in wholesale trade of furniture, household goods, and small metal products

46.19.Z - Activity of agents involved in wholesale trade of non-specialized goods

46.69.Z - Wholesale trade

47.19.Z - Retail trade

47.79.Z - Retail sale of used products

61.90.Z - Activities in other telecommunications fields

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

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

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

70.22.Z - Head office activities and management consultancy

71.11.Z - Architectural activities

71.12.Z - Engineering activities and related technical consultancy

71.20.B - Inspection and issuing opinions on the technical condition of chimneys and ventilation ducts

74.10.Z - Specialized design activities

74.90.Z - Other professional, scientific and technical activities, not elsewhere classified