The purchasing managers' index (PMI) for China's manufacturing sector came in at 52.6 in February, up from 50.1 in January, data from the National Bureau of Statistics showed Wednesday.A reading above 50 indicates expansion, while a reading below reflects contraction.The purchasing managers' index (PMI) for China's manufacturing sector came in at 52.6 in February, up from 50.1 in January, data from the National Bureau of Statistics showed Wednesday.A reading above 50 indicates expansion, while a reading below reflects contraction.