01.05. Power Supply (Internal and External Power Supply and Lighting Networks / Power Supply Systems / Photovoltaic and Wind Power Plants), Category 1 (01.05), 01.06. HVAC / Gas Supply, Category 1 (01.06), 01.07. Hydraulic Structures, Category 1 (01.07), 01.08. Water Supply and Drainage / Melioration Systems, Category 1 (01.08), 01.10. Communication Systems (Telecommunication and Signaling Systems / Transmitters / Receivers / Antennas / Amplifiers), Category 1 (01.10), 04.04. Residential / Commercial and Industrial Buildings, Category 2 (04.04), 04.07. Hydraulic Structures, Category 2 (04.07), 04.08. Water Supply and Drainage / Melioration Systems, Category 1 (04.08), 05.11. Engineering Geological Survey, Category 1 (05.11)

Hydraulic Engineering Construction, Water-Supply Construction, Sewage Construction, Heating Systems Installation, Ventilation Systems Installation, Air-Conditioning Installation, Refrigeration Installation, Water Supply / Sewage Work - Indoor / Plumbing, Water Supply / Sewage Work - Outdoor, Pumping Station Construction, Fire Alarm Installation, Irrigation Systems, 03.04. Residential / Commercial and Industrial Buildings, Category 3 (03.04), 03.06. HVAC / Gas Supply, Category 3 (03.06), 03.07. Hydraulic Structures, Category 3 (03.07), 03.08. Water Supply and Drainage / Melioration Systems, Category 3 (03.08)

Light Construction Equipment / Devices, Construction Power Tools, Construction Hand Tools, Other Light Construction Equipment / Devices