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![An employee demonstrates a digital vending machine during an invention event organized by the Korean Intellectual Property Office and the Korea Invention Promotion Association at the 63 Convention Center in Seoul on Monday. [NEWS1]](https://koreajoongangdaily.joins.com/data/photo/2021/05/31/08d3ac37-5a1e-4f4f-992d-a63f22953599.jpg)
An employee demonstrates a digital vending machine during an invention event organized by the Korean Intellectual Property Office and the Korea Invention Promotion Association at the 63 Convention Center in Seoul on Monday. [NEWS1]
with the Korea JoongAng Daily
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