MARCIN MAJAK

43.21.Z - Installation of electrical systems

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

43.12.Z - Site preparation for construction

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

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

43.35.Z - Performing other finishing construction works

43.41.Z - Performing roof structures and coverings

43.42.Z - Performing other specialized construction works related to the construction of buildings

43.50.Z - Specialized construction works in the field of civil and water engineering

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

62.10.B - Programming activities

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

77.11.Z - Rental and leasing of passenger cars and light motor vehicles

77.12.Z - Rental and leasing of trucks

77.22.Z - Rental and leasing of other personal and household goods

77.32.Z - Rental and leasing of construction machinery and equipment

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

85.51.Z - Non-school forms of sports education and recreational and sports activities

85.59.B - Courses and training for acquiring knowledge, skills, and professional qualifications in non-school forms

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

96.99.Z - Other individual services not classified elsewhere