Operating conditions in Canada's manufacturing sector strengthened in March, according to the RBC Canadian Manufacturing Purchasing Managers Index (RBC PMI), a monthly survey, conducted in association with Markit and the Purchasing Management Association of Canada (PMAC), which offers a comprehensive and early indicator of trends in the Canadian manufacturing sector. The headline RBC PMI - a composite indicator designed to provide a single-figure snapshot of the health of the manufacturing sector - registered 52.4 in March, up from 51.8 in February, signalling a modest improvement in Canadian manufacturing business conditions. Index readings above 50.0 signal expansion from the previous month;…