![[Photo] The Era of Mail Delivery by Drone](https://cphoto.asiae.co.kr/listimglink/1/2021092614220742083_1632633727.jpg)
Various drones and unmanned vehicles are being exhibited at the '2021 Unmanned Mobility Industry Expo' held on the 26th at COEX in Gangnam-gu, Seoul. / Reporter Kang Jin-hyung aymsdream@
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