HONG KONG (AP) — An official measure of Chinese factory activity barely budged last month while a private survey found manufacturing deteriorated in the first quarter, adding to signs the world’s No. 2 economy is slowing.

The purchasing managers’ index by the China Federation of Logistics & Purchasing ticked up to 50.3 in March from 50.2 in February. The index uses a 100-point scale on which numbers above 50 indicate expansion.