Heli-Expo is the largest helicopter exhibition in the world. It is organized by the Helicopter Association International. It is one of the largest gatherings of the industry it is often the place where innovations are introduced. Both new and older model helicopters are on display at the show, as well as parts, accessories, upgrade kits, and information about services.
For more on the agenda and registration, see https://www.rotor.org/Home/HELI-EXPO?gclid=EAIaIQobChMIldz5mp_O4gIVDJSzCh2PrQAtEAAYASAAEgKeOvD_BwE