A visitor looks at a stone at the 2012 China (Kunming) Pan-Asian Stone Expo in Kunming, capital of southwest China's Yunnan province, July 10, 2012. The eight-day stone expo opened Tuesday at the Kunming International Convention and Exhibition Center. The expo, which is the largest stone product fair in Asia, attracted exhibitors from China, Sri Lanka, Myanmar, Vietnam, Afghanistan and other countries and regions.[Photo/Xinhua]