Kelektro Krzysztof Hajzer

43.21.Z - Installation of electrical systems

33.13.Z - Repair and maintenance of electronic and optical devices

33.14.Z - Repair and maintenance of electrical devices

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

42.21.Z - Works related to the construction of transmission pipelines and distribution networks

42.22.Z - Works related to the construction of telecommunications and electrical lines

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

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

62.20.B - IT consulting and IT equipment management activities

62.90.Z - Other IT and computer-related services

68.12.A - Development of residential building projects

68.12.B - Development of non-residential building projects

68.12.C - Development of building projects

71.11.Z - Architectural activities

71.12.B - Engineering activities and related technical consultancy

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