Visitors walk into the Nanning International Exhibition Center, one of the venues of the 8th China-ASEAN Expo, in Nanning, capital of southwest China's Guangxi Zhuang Autonomous Region, Oct. 26, 2011. The 6-day event, which attracted 2,300 enterprises from China and 11 ASEAN countries, closed on Wednesday, with a total transaction volume of 1.8 billion US dollars.