Growth in the US manufacturing sector slowed for the second straight month in December, partly due to falling crude prices and the labour slowdown at West Coast ports.
The Institute for Supply Management has reported that its purchasing managers index for the sector fell to 55.5 last month from 58.7 in November.
The PMI remained above where it started in 2014, at 51.3. Anything above 50 denotes growth.
December survey respondents said growth in new orders and production slowed and inventories contracted during the month, though hiring picked up.
Prices also continued to fall, and at a faster pace, mainly reflecting the fall in prices of commodities led by oil.
Respondents in the chemicals and oil products industries said buyers are holding off purchases and running down inventories as they wait for lower prices.
Other manufacturers cited the standoff between West Coast port owners and unions for delays in getting key materials from Asia for their businesses.
"West Coast port issues have greatly impacted our incoming materials. We are air freighting many parts from Japan and Asia to support production while parts sit at the dock," said one respondent from the fabricated metal products industry.
