Port and harbor cooperation will be the focus of the Fourth China-ASEAN Expo to be held in Nanning, capital of South China's Guangxi Zhuang Autonomous Region in October.

The annual event, organized by China and the 10 ASEAN members, will be held from October 28-31.

Business leaders and top government officials from the region will attend the expo, which is expected to provide a platform for opportunities brought by the China-ASEAN free trade agreement, Vice-Minister of Commerce Gao Hucheng said on Friday.