2012 Int'l Building Materials and Decoration Fair opens in Tianjin (7)

A visitor listens to the introduction of a latest energy-saving wall at the "2012 International Building Materials and Decoration Fair" in north China's Tianjin Municipality, Nov. 9, 2012. The fair, with the participation of more than 800 enterprises, opened here on Friday. (Xinhua/Wang Qingyan)