Power Engineering Construction, Power Line Construction, Electrical Work / Indoor, Electrical Work / Outdoor, Lighting Systems, Power Supply Systems Installation, Wind Power Plants, Other - Electric Supply / Lighting - Installation of transformers, 03.05. Power Supply (Internal and External Power Supply and Lighting Networks / Power Supply Systems / Photovoltaic and Wind Power Plants), Category 1 (03.05)

Heating Systems Installation, Ventilation Systems Installation, Air-Conditioning Installation, Refrigeration Installation, Water Supply / Sewage Work - Indoor / Plumbing, Electrical Work / Indoor, Electrical Work / Outdoor, Lighting Systems, Thermal / Heat Insulation, Sound / Vibration Insulation, Sound Absorption / Acoustics

Burglar Alarm Installation, Video Surveillance, Fire Alarm Installation, Fire Suppression Installation, Access Control Systems, Intercom Systems / Local Networks