Workers produce battery lead plate at a company in Ganyu County, east China's Jiangsu Province, Oct. 31, 2012. China's manufacturing activity saw an increase in October, official data showed Nov. 1, 2012. The purchasing managers' index (PMI) rose to 50.2 percent in October from 49.8 percent in September, just above the 50-percent figure that demarcates expansion from contraction, according to data released by the China Federation of Logistics and Purchasing (CFLP).