35 Advertising; Business management; Business administration; Business intermediary services in the trade of machines, dust removing machines and systems, suction machines and systems, transport machines and installations, and filters and pumps (parts of machines); Business intermediary services in the trade of air purifying apparatus and systems, air extracting apparatus and systems, air filtering apparatus and systems, and filters for the aforesaid apparatus and systems; Business intermediary services in the trade of air regulating and conditioning apparatus and systems, ventilating apparatus and systems, and filters for the aforesaid apparatus and systems; Retailing and wholesaling in the field of dust removing machines and systems, suction machines and systems, transport machines and installations, and filters and pumps (parts of machines), air purifying apparatus and systems, air extracting apparatus and systems, air filtering apparatus and systems, and filters for the aforesaid apparatus and systems, air regulating and conditioning apparatus and systems, ventilating apparatus and systems, and filters for the aforesaid apparatus and systems; Import and export of the aforesaid goods; Organisation of trade fairs, exhibitions and other events for commercial or advertising purposes; Information and consultancy relating to the aforesaid services.