There are few industries that are not connected to a wide range of complementary companies. An airplane manufacturer will need to know about the companies that produce aluminum, electronics, wiring harnesses and avionic packages. None of these businesses are in direct competition with the airplane manufacturer. Most of them will supply the manufacturer with parts for their product. It is important for the airline manufacturer to occasionally meet with these people to see what new items are being produced.
Business conferences are important for a great many industries. Companies that host these conferences must understand the interaction between different industries. Suppliers need to meet with those that will use their goods and services to create products. Product creators must meet with suppliers to learn about new developments that will affect how they do business. A good host company for business conferences will be sure to include as many relevant parties as possible for a successful conference.