One of the largest LED screens in the world has just been designated as part of the official promotion for the Expo 2010 Shanghai China exhibition.

The screen, which has a surface of 3,591 m2 (63mx57m), is installed on the upper side of one of the city’s skyscrapers (opposite Bund Avenue and along the banks of the river Huangpu) and is exclusively run by the Shanghai Gonghe Advertising & Exhibition Co. Ltd ad-sales agency.

Lit up every day between 5.30 pm and 11 pm, it is currently showing the countdown to the opening of the event, and ads from sponsors as well as from third parties.