06
Common metals and their alloys; materials of metal for HVAC
(heating, ventilation, air-conditioning) systems for
aeronautical vehicles
09
Scientific apparatus and instruments (other than for medical
use), apparatus and instruments for switching, transforming,
regulating or controlling electricity
11
HVAC (heating, ventilation, air-conditioning) systems and
equipment for aeronautical vehicles; air distribution
units; air-conditioning installations and apparatus for
aeronautical vehicles; cooling apparatus and equipment for
aeronautical vehicles and their engines; air or water
purifying apparatus and machines
37
Installation, maintenance and repair of HVAC (heating,
ventilation, air-conditioning) systems and equipment for
aeronautical vehicles
42
Technical, scientific and industrial research; engineering;
research and development (engineering work) in the
aeronautical field; analysis of technical data; services
provided by engineers relating to evaluations, estimates and
research in connection with the technologies used in
systems, equipment and parts of aeronautical vehicles;
professional advisory and consultancy services relating to
engineering; technical advice in the aeronautical field
(services of engineers); testing of machines and materials;
monitoring and inspection of engines, systems, equipment and
parts of aircraft; design and development of software and
computer programming; services for analysis, expertise and
equipment and parts for aeronautical vehicles; machine and
material testing data acquisition and downloading; technical
project studies relating to aeronautical vehicles and their
components, including HVAC (heating, ventilation,
air-conditioning) systems and equipment
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