CPV: 45310000 Electrical installation work, 45331210 Ventilation installation work, 45331211 Outdoor ventilation installation work, 45331220 Air-conditioning installation work, 45331221 Partial air-conditioning installation work, 45331230 Installation work of cooling equipment, 45331231 Installation work of refrigeration equipment, 45343000 Fire-prevention installation works, 45343100 Fireproofing work, 45343200 Firefighting equipment installation work, 45343210 CO2 fire-extinguishing equipment installation work, 45314300 Installation of cable infrastructure, 45343220 Fire-extinguishers installation work, 45350000 Mechanical installations, 45351000 Mechanical engineering installation works, 45400000 Building completion work, 09310000 Electricity, 09000000 Petroleum products, fuel, electricity and other sources of energy, 09330000 Solar energy, 14784000 Lithium, 31100000 Electric motors, generators and transformers, 31121110 Power converters, 45315100 Electrical engineering installation works, 31151000 Static converters, 31153000 Rectifiers, 31154000 Uninterruptible power supplies, 31155000 Inverters, 31158000 Chargers, 31158100 Battery chargers, 31162000 Parts of transformers, inductors and static converters, 31172000 Voltage transformers, 31174000 Power supply transformers, 31212000 Circuit breakers, 45315300 Electricity supply installations, 31214000 Switchgear, 31400000 Accumulators, primary cells and primary batteries, 31420000 Primary batteries, 31422000 Battery packs, 31430000 Electric accumulators, 31440000 Batteries, 31680000 Electrical supplies and accessories, 31700000 Electronic, electromechanical and electrotechnical supplies, 38550000 Meters, 38551000 Energy meters, 45315400 High voltage installation work, 38552000 Electronic meters, 38554000 Electricity meters, 51100000 Installation services of electrical and mechanical equipment, 51110000 Installation services of electrical equipment, 51111000 Installation services of electric motors, generators and transformers, 51111100 Installation services of electric motors, 51111200 Installation services of generators, 51111300 Installation services of transformers, 51112000 Installation services of electricity distribution and control equipment, 51112100 Installation services of electricity distribution equipment, 45315500 Medium-voltage installation work, 51112200 Installation services of electricity control equipment, 51120000 Installation services of mechanical equipment, 51700000 Installation services of fire protection equipment, 51800000 Installation services of metal containers, 51810000 Installation services of tanks, 65400000 Other sources of energy supplies and distribution, 71314000 Energy and related services, 71314100 Electrical services, 71314200 Energy-management services, 71314300 Energy-efficiency consultancy services, 45315600 Low-voltage installation work, 45315700 Switching station installation work, 45316000 Installation work of illumination and signalling systems, 45331200 Ventilation and air-conditioning installation work