The delivery of aviation element pins is a popular activity and souvenir at air shows because they are not only practical and symbolic, but also for several reasons:

• Commemorative significance: Air shows are usually a rare event, and attendees want to mark the special occasion with pins. Pin as a small souvenir, easy to collect and display, and easy to carry.

• Symbols of identity and interest: Pins with aviation elements often represent the uniqueness and culture of the aviation industry. They can show the wearer's love for the aviation industry or people engaged in related professions, becoming a status symbol.

• Branding: Airlines, aircraft manufacturers or aviation-related brands often use customized aviation element pins as promotional items to make a certain impression on attendees, thereby increasing the brand's visibility and influence.

• Social interaction: Pins also become a social tool at the show. Participants can connect with others through the exchange of pins, forming an interactive way to increase the sense of participation in the exhibition.

• Design and artistic value: Pins with aviation elements are often beautifully designed to reflect the artistic and technical sense of aviation culture, which is also an attraction for exhibitors who like to collect art or small objects.

• Small and inexpensive: Compared to other more expensive souvenirs, pins are relatively cheap and small, easy to carry, and suitable for large-scale giving and collection.

To sum up, the pins of aviation elements not only have a commemorative and symbolic significance, but also are closely connected with aviation culture and the atmosphere of the exhibition, becoming a part of the exhibition.