CHONGQING, May 19 (Xinhua) -- A major trade and investment fair in southwest China's Chongqing Municipality concluded Sunday, with 271 deals signed, worth about 549.8 billion yuan (79.5 billion U.S. dollars).

The Western China International Fair for Investment and Trade which opened on May 16 has attracted nearly 70,000 participants from 95 countries and regions, including 300 Fortune 500 enterprises.

The contracts signed were in the areas of smart manufacturing, new materials, new energy vehicles, bio-pharmaceuticals and ecological conservation, said Xu Xincheng, deputy director of the city's commerce commission.