Airline industry trade shows are not just about showing off the latest plane parts. They are about what is new within the industry. Materials are an important part of it because they affect the plane performance directly. If there is a new way to make a lighter, safer plane, everyone wants to know it. This includes manufacturers as well as buyers. Even maintenance suppliers will want to find out about this important information.
General aviation improvements are often designed to enhance the safety features of airplanes. While much of the information is proprietary, many manufacturers will make safety systems for other plane builders. Sharing in this way keeps their information safe, but it enhances the industry as a whole. Improvements that do not involve safety are generally in cabin design and function. These are advertised and sold as part of the manufacturer's package for a wide range of plane types.