Companies that decide to take their business to the next level often attend trade shows. Building a booth, staffing it and providing sales literature to a large group is an expensive proposition. The booths are often complex. They must be dismantled for shipping and rebuilt on site. The cost for transportation and space rental in show halls can be very costly. There is no guarantee that a show will produce future business, and this is a risk the company has to take. While there are no guarantees, business contacts are often made and turned into sales. That is the reason companies take this expensive marketing step.