World Expo in South Korea

Staff members present "Energy Swing" in the "Energy Park" of the World Expo in Yeosu, South Korea, on May 13, 2012. The "Energy Swing" is able to play music box on the top of it by swing. (Xinhua/Yao Qilin)

May 14, 2012 China Business–Philippines
Posted in:Energy , Technology

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