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Trade show is an exhibition organised so that companies in a specific industry can showcase and demonstrate their new products and services. Some trade fairs are open to the public, while others can only be attended by company representatives (members of the trade) and members of the press, therefore tradeshows are classified as either "Public" or "Trade Only".
Trade fairs often involve a considerable marketing investment by participating companies. Costs include space rental, display design and construction, telecommunications and networking, travel, accommodations, promotional literature, and "give away" items. In addition costs are incurred at the show for services such as electrical, booth cleaning, internet services, floral decoration within the booth and drayage (also known as material handling).
Consequently, cities often promote trade shows as a means of economic development.