JNR System Jerzy Noga

80.09.Z - Other security activities, not elsewhere classified

26.20.Z - Manufacture of computers and peripheral equipment

26.40.Z - Manufacture of electronic consumer products

33.12.Z - Repair and maintenance of machinery

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

41.00.A - Construction work related to the construction of residential buildings

42.11.Z - Works related to the construction of roads and highways

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

42.99.Z - Works related to the construction of other civil engineering and water engineering objects, not classified elsewhere

43.21.Z - Installation of electrical systems

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

43.42.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

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

47.92.Z - Intermediary retail sale, specialized

62.20.B - IT consulting and IT equipment management activities

62.90.Z - Other IT and computer-related services

68.12.C - Development of building projects

91.30.Z - Conservation and restoration activities and other supporting activities for cultural heritage

95.10.Z - Repair and maintenance of computers and telecommunications equipment