Visitors experience LED lighting during the 5th Electronics &Information Fair in Hangzhou, east China's Zhejiang Province, April 21, 2011. The Fair, to be held from April 21 to 24, has attracted more than 200 exhibitors from home and abroad. (Xinhua/Huang Zongzhi)

Visitors consult exhibitors about energy-saving lamps during the 5th Electronics &Information Fair in Hangzhou, east China's Zhejiang Province, April 21, 2011. The Fair, to be held from April 21 to 24, has attracted more than 200 exhibitors from home and abroad. (Xinhua/Huang Zongzhi)