韓国電力公社
Along with Kim Yuna, Park Ji-sung, Park Tae-Hwan, and Edward Kwon, they were appointed to promote the 2010 G-20 Seoul summit. They also served as honorary ambassadors for the Korea Electric Power Corporation (KEPCO). JYJ was appointed as Goodwill Ambassadors for World OKTA (World Overseas Korean Trader’s Association), the largest association of overseas-based Korean business leaders, with President Lee Myung Bak present at the ceremony. They were also appointed as Honorary Ambassadors for Jeju Island's campaign to be designated one of the "New 7 Wonders of the World".