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皇冠体育app's biggest outdoor LED screen wall was switched on at Shanghai City Group Plaza this month as a publicity platform for the 2010 Shanghai World Expo.
The LED (light-emitting diode) screen wall is 139.6 m tall and 43.2 m wide, and can be seen from 10 miles away.
The giant screen wall comes with an Internet connection to display "real-time" information.
The Expo is expected to attract more than 70 million visitors.
People's Daily Online
(皇冠体育app Daily 07/13/2009 page7)
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