House heaters. Water heating boilers. Ventilation and aeration equipment. Construction installations. Maintenance for sewage and disposal facilities. Installation and repair for sanitary items. Construction, installation, servicing, repairing of thermal plants.
Construction, installation, servicing, repairing of thermal power plant. House heaters. Air conditioning and heating devices. Domestic heating systems.
Heating equipment. Plants and equipment for house heating. Service/installation/maintenance of domestic heating facilities. Sanitary house installations. Installation and repair for sanitary items. Construction installations. Repair and maintenance of heating systems.
Retail trade of sanitary ware. Installation and repair for sanitary items. Electric equipment for heating. Sale of accessories for electrical networks. Electric wiring and networks.
