WASHINGTON -- The US flash manufacturing purchasing managers' index rose to 53.2 in July, up 130 basis points, according to Markit.

It marks the index's highest level in four months, and reflects increases for new orders and employment.

"The US manufacturing sector picked up momentum again in July, with output orders books and employment all growing," said Chris Williamson, chief economist at Markit. "The pace of manufacturing growth nevertheless remains well below that seen at the start of the year, in part reflecting weaker demand from many export markets, notably China and other emerging economies."