35 Advertising, in particular the dissemination of advertising material, rental of advertising time on all communication media, demonstration of the goods and services of advertising consultants; consultant services regarding marketing; online advertising and marketing services; dissemination of advertising material; provision of commercial advice relating to advertising; rental of advertising time on all communication media; demonstration of goods; electronic commerce ( ecommerce) services, namely, making product information available via telecommunication networks for advertising and sales purposes; e-commerce services, namely, advertising in the form of data, texts, images, sounds, individually or in combination, via computer networks, for the sale of goods and services of all kinds; organization of exhibitions and trade fairs for commercial or advertising purposes; organization and conducting of commercial trade fairs and exhibitions for business purposes; organization and conducting of trade f airs, special events and exhibitions for commercial or advertising purposes; auctioneering; advertising and promotional services and providing information relating thereto; promotion of third-party goods and services; preparation and holding of promotional and marketing events, namely, arranging and conducting marketing promotional events for others; negotiation and conclusion of commercial transactions for others; business networking service for professional and economic purposes, also on the Internet; preparation being arranging of commercial trading transactions for third parties, also in the framework of electronic commerce; commercial intermediation services being mediation and conclusion of commercial transactions for others; purchasing and procurement services, namely, procurement of contracts for third parties for the purchase of goods; arranging of contracts, for third parties, for providing services; price comparison services; search engine optimization for sales promotion purposes; commercial business administration, business organization consulting and business management; providing office functions