A labourer welds at a valve factory in Wenzhou, Zhejiang Province October 18, 2011. China's annual economic growth eased slightly to 9.1 percent in the third quarter, expanding at its slowest pace since early 2009 as tight monetary policy and easing foreign demand crimped activity, but showing no signs of a sharp slowdown. REUTERS/Carlos Barria (CHINA - Tags: BUSINESS EMPLOYMENT POLITICS CONSTRUCTION)