11
Fires; Radiators; Central heating radiators, Radiators, electric, Heating plates; recycling units; Water heaters [apparatus]; Boilers; Fans [air-conditioning], Heat distributors; Air conditioning systems; Ventilation units; Heat pumps, Heat exchangers; Radiator caps, Regulators for heating installations; Heat regenerators, Heating installations (hot water -); Expansion tanks for central heating installations; Temperature exchangers; Taps [cocks, spigots] faucets [Am] for pipes; Washers for water taps; Air conditioning installations; Sanitary apparatus and installations; Water distribution installations; Taps and fittings
37
Construction of buildings of all kinds, including alterations thereto, and maintenance and removal thereof, construction consultancy, professional construction assistance and building construction supervision, construction consultancy and investment construction, real estate maintenance, assembly, repair, maintenance, servicing and installation of heating installations, radiators, heat recovery units, water heaters (apparatus), boilers, air-conditioning fans, ventilating systems, heat pumps and exchangers, hot water heating installations, air conditioning installations, apparatus for water supply and sanitary purposes, water conduits installations
42
Development, construction and project studies, technical supervision and inspection, technical engineering in the field of heating and ventilating systems, heat exchangers, heat recovery units, heat pumps, heating installations, radiators, water heaters (apparatus), boilers, air-conditioning fans, ventilating systems, hot water heating installations, air conditioning installations, apparatus for water supply and sanitary purposes, water conduits installations