Visitors look at a solar powered golf cart at the 2010 China International Patent Fair in Dalian, northeast China's Liaoning Province, Aug. 7, 2010. The three days' patent fair closed on Sunday. More than 5100 patents from 17 countries and regions were exhibited on the fair.

Chinese technicians talk with Russian exhibitors at the 2010 China International Patent Fair in Dalian, northeast China's Liaoning Province, Aug. 7, 2010. The three days' patent fair closed on Sunday. More than 5100 patents from 17 countries and regions were exhibited on the fair.

Visitors look at a project model at the 2010 China International Patent Fair in Dalian, northeast China's Liaoning Province, Aug. 7, 2010. The three days' patent fair closed on Sunday. More than 5100 patents from 17 countries and regions were exhibited on the fair.

Visitors look at the products of graduation projects for college students at the 2010 China International Patent Fair in Dalian, northeast China's Liaoning Province, Aug. 7, 2010. The three days' patent fair closed on Sunday. More than 5100 patents from 17 countries and regions were exhibited on the fair.

(Source: Xinhua)