The purchasing managers’ index (PMI) for China’s manufacturing sector came in at 49.5 in March, down from 50.2 in February, data from the National Bureau of Statistics (NBS) showed Thursday.A reading above 50 indicates expansion, while a reading below reflects contraction.The resurgence of domestic COVID-19 outbreaks and mounting geopolitical uncertainties have weighed on China’s factory activities in March, said NBS…