Workers install parts on a production line at a machinery factory in Qingzhou, east China's Shandong Province, July 11, 2016. China's manufacturing sector posted a slight drop in July due to the flood season and weak demand, official data showed Monday. The purchasing managers' index (PMI) came in at 49.9 in July, slightly lower than June's 50, according to the National Bureau of Statistics (NBS) and the China Federation of Logistics and Purchasing. (Xinhua/Wang Jilin)