SHENYANG, Oct. 20 -- A 500-strong trade delegation from the Democratic People's Republic of Korea (DPRK) is promoting the country's investment opportunities at a four-day expo in China's border city of Dandong, Liaoning Province.

The third China-DPRK Economic, Culture and Tourism Expo, closing on Tuesday, has seen 70 million yuan (about 11.6 million U.S. dollars) of trading, agreements on eight investment contracts worth 100 million U.S. dollars, and 60 trade agreements worth 1.26 billion U.S. dollars in total.

Shi Guang, mayor of Dandong, said the expo has drawn 100 DPRK exhibitors, 96 companies from Russia, India, China's Taiwan and Hong Kong, as well 210 companies from the Chinese mainland. About 250,000 visitors from 20 countries and regions have attended.

The DPRK is developing a Special Economic Zone to help implement its opening-up policy.

Kim Jong Sik, an official with the DPRK Economic Development Association,ssaid the zone is open up to any countries interested in establishing economic and trade relations with the DPRK.

The zone will be dedicated to external trade, assimilating foreign investment and improving the country's economy, he said.

According to the official, the DPRK has clinched bilateral trade and investment protection agreements with more than 30 countries and mapped out an economic structure including metallurgy, mining, production of construction materials, machinery, garment making, shipbuilding, agriculture and aquaculture.

Kim said the country's human resources, environment and tourist resources are key factors to appeal to foreign investment. It has been working to optimize investment laws.

The city of Dandong faces the DPRK across the Yalu River. Construction of a bridge linking both sides has been basically completed. It is expected to help facilitate the DPRK's exchanges with the outside world.