Heating systems and equipment, Boilers, hot-water boilers, burners, interior heaters, water heaters, radiant heating systems, fireplaces, floor heating systems; measuring and control instrumentation, Water supply, sewage system: water cleaning technologies and technical means, pipes and fittings, pumps, stop valve, compact sewage disposal plants, water analysis, water-meters, Gas supply: equipment and systems for commercial control of natural and technical gas, gas-fired boilers, gas-cylinders, equipment for gas-filling stations, pipes and stop valve, gas analyzers, Ventilation, air conditioning, Fire fighting and smoke removal, Security systems, video monitoring, control and access restriction aids, Radio- and television networks and communications, New energy-efficient technologies for municipalities, Maintenance of housing areas, public roads and internal territories, Treatment of municipal waste and sewage, cleaning of building fronts, snow-ploughs, mini-washers, high pressure washers, stationary washing plants, Urban areas improvement. Nature complexes and green plantings.