China's non-manufacturing units contract

China's non-manufacturing purchasing managers' index fell to 53.9 percent in August from 54.1 percent for July, according to official data released Tuesday.

A reading of more than 50 percent indicates expansion in non-manufacturing activity, while a reading below 50 percent indicates contraction, reports Xinhua.

The monthly indicator is released by the national bureau of statistics and the China Federation of Logistics and Purchasing.