Labourers check the quality of blades of wind turbines in a factory in Lianyungang, east China's Jiangsu province on September 7, 2015. China on September 7, lowered last year's economic growth figure to 7.3 percent after concerns over slowing expansion caused global market havoc, but said its own exchanges are stabilising following "bubbles" and painful corrections.  AFP PHOTO   CHINA OUT        (Photo credit should read STR/AFP/Getty Images)