6
Prefabricated houses [ready-to-assemble] of metal; Containers of metal [storage, transport]; Framework of metal for building; Buildings of metal; Buildings, transportable, of metal; Wall claddings of metal for building; Wall linings of metal for building; Tanks of metal; Packaging containers of metal; Silos of metal; Steel buildings; Metal pipes and conduits for water distribution, heating, cooling and air conditioning; Metal joining material; Articles of metal for use by locksmiths; Vents; Valves; Metal fittings for metal pipelines; Fittings for metal pipelines
11
Air deodorizing apparatus; Air cooling apparatus; Filters for air conditioning; Air reheaters, Air dryers; Air-conditioning apparatus; Air filtering installations; Hot air apparatus; Heating apparatus; Heat regenerators; Air-conditioning apparatus; Heat exchangers, other than parts of machines; Cooling installations and machines; Metal components for heating, cooling and air conditioning systems made of metal; Refrigerating chambers; Ionization apparatus for the treatment of air or water; Air purifying apparatus and machines; Refrigerating appliances and installations; Cooling appliances and installations; Fans [parts of air-conditioning installations]; Ventilation [air-conditioning] installations and apparatus; Air sterilizers; Heat pumps
37
Heating equipment installation and repair; Installation and repair of air-conditioning apparatus; Disinfecting; Machine maintenance and repair; Freezing equipment installation and repair