Ключевые слова: building, buildings, business, center, company, congress center, congress centers, consumer, consumer fairs, eat, eat congress center, eat mess, economy, editorial, er63237, event, exhibition, exhibition grounds, exhibition hall, exhibitions, exhibitors, fair, german, germany, hall, innovation, intentionally, international, marketing, north rhinewestphalia, nrw, seller, services, show, showcase, technology, trade, trade exhibition, trade fairs,