A trade fair (or trade show) is an exhibition organised so that companies in a specific industry can showcase and demonstrate their new products and services. Generally trade fairs can not be open to the public and can only be attended by company representatives (members of the trade) and members of the press. Exhibition is a word with several meanings. ... Press is a general term having a number of related meanings stemming from the original definition of pressing as the physical action of applying force: Things relating to Metalworking: Machine press, a machine that shapes material by the application of pressure; Flypress, a machine that cuts material by pressing with...

Examples of trade fairs are CeBIT and COMDEX (computer industry) and Photokina (photographic industry). A crowded exhibition hall during CeBIT 2000. ... COMDEX (Computer Dealers Exhibition) is a computer expo held in Las Vegas, Nevada each November. ... The tower of a personal computer (specifically a Power Mac G5). ... Photokina is a trade fair for the photographic and imaging industries. ... Lens and mounting of a large format camera Photography is the technique of recording and generating permanent images, by the capturing and preservation of physical stimulus-patterns on a layer of photosensitive material. ...