09
Optical apparatus and instruments; weighing and measuring
apparatus and instruments; detectors; programs for computers
only for indoor air quality use; application software, only
for indoor air quality use
11
Airfilters for industrial use and industrial installations;
apparatus, systems and installations and parts therefor for
air filtration, air cleaning and ventilation
35
Retailing services relating to apparatus, systems,
installations and parts therefor for air filtration, air
purification and ventilation; commercial information
relating to apparatus, systems, installations and parts
therefor for air filtration, air purification and
ventilation; marketing and public relations relating to
apparatus, systems, installations and parts therefor for air
filtration, air purification and ventilation; information
relating to retailing, promotion and publicity services;
business management
37
Construction, installation, maintenance, servicing and
repair relating to apparatus, systems, installations and
parts therefor for air filtration, air purification and
ventilation; information relating to the aforesaid services
42
Computer programming, updating and design of computer
software, only for indoor air quality use; research,
development and design in relation to air filtration, air
purification and ventilation, only for indoor air quality
use; drawing up of technical expert opinions; quality
control; engineering services; material testing services;
engineering drawing; construction drafting; information and
consultancy relating to technical research services;
compilation, providing and scientific information relating
to air filtration, air purification and ventilation