7
Electric power generators; mechanical control devices for heaters, namely, valves being parts of machines; mechanical control devices for air heaters and water heaters, namely, pump control valves, proportional flow valves as parts of machines, thermostatic control valves as parts of machines; pumps for heating installations, namely, pumps for machines
9
Fuel cells and structural parts therefor; fuel cell stacks; galvanic electric cells; galvanic batteries; anodes; cathodes; electric batteries; photovoltaic cells
11
Apparatus for heating, namely, boilers for heating installations, central heating radiators, heating installations, thermostatic valves as parts of heating installations; lighting apparatus, namely, lighting installations and electric lighting fixtures; steam generators; heat exchangers; heat regenerators; hot water heaters; central heaters; gas operated apparatus for heating, namely, space heaters and water heaters; air conditioners; cooling appliances and installations, namely, air coolers, water coolers; gas regulators
37
Installation and repair of heating apparatus; installation and repair of electricity generation apparatus, installation and repair of refrigeration or air conditioning apparatus
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