TOKYO -- Asia's factories hit a rough patch in July as rising input costs and a new wave of coronavirus infections overshadowed solid global demand, highlighting the fragile nature of the region's recovery.

Manufacturing activity rose in export powerhouses Japan and South Korea, though firms suffered from supply chain disruptions and raw material shortages that pushed up costs.

China's factory activity growth slipped sharply in July as demand contracted for the first time in over a year, a private survey showed, broadly aligning with an official survey released on Saturday showing a slowdown in activity. read more 

Indonesia, Vietnam and Malaysia saw factory activity shrink in July due to a resurgence in infections and stricter COVID-19 restrictions, according to private surveys.

The surveys highlight the divergence emerging across the global economy on the pace of recovery from pandemic-induced strains, which led the International Monetary Fund to downgrade this year's growth forecast for emerging Asia. 

"Anecdotal evidence suggested a resurgence in COVID-19 cases across Asia and ongoing supply chain disruption had led to demand easing in domestic and external markets," said Usamah Bhatti, an economist at IHS Markit.

China's Caixin/Markit Manufacturing Purchasing Managers' Index (PMI) fell to 50.3 in July from 51.3 in June, marking the lowest level in 15 months, as rising costs clouded the outlook for the world's manufacturing hub. 

The final au Jibun Bank Japan PMI rose to 53.0 in July from 52.4 in the previous month, though manufacturers saw input prices rise at the fastest pace since 2008. 

Japan also faces a surge in Delta variant cases that forced the government to expand state of emergency curbs to wider areas through Aug. 31, casting a shadow over the Olympic Games and dashing hopes for a sharp rebound in July-September growth.

South Korea's PMI stood at 53.0 in July, holding above the 50 mark indicating an expansion in activity for the 10th straight month. But a sub-index on input prices rose at the second highest on record in a sign of the strain firms are feeling from rising raw material costs. read more 

Underscoring the pandemic's strain on emerging Asia, Indonesia's PMI plunged to 40.1 in July from 53.5 in June.

Manufacturing activity also shrank in Vietnam and Malaysia, the PMI July surveys showed.

Once seen as a driver of global growth, Asian's emerging economies are lagging advanced economies in recovering from the pandemic's pain as delays in vaccine rollouts hurt domestic demand and countries reliant on tourism.