Xinhua news agency, Washington, June, 3, by the impact of trade tensions, data released by authoritative institutions on 3 showed that in May, the US manufacturing purchasing managers index decreased.

A report released by the ISM, a US authoritative research institute, showed that the US Manufacturing Purchasing Managers' index decreased by 0.7 to 52.1 in May, the lowest since October 2016.

The US Manufacturing Purchasing Managers' index is a barometer of the comprehensive development of the manufacturing industry in the United States.

The index usually takes 50 as the critical point, higher than 50, which is considered to be an expansion of manufacturing industry, while less than 50 indicates that the manufacturing industry is in a state of atrophy.

Data released by international consultancy IHS Ma kit on the same day also showed that in May, the US Manufacturing Purchasing Managers' index fell to 50.5, the lowest value since September 2009, and is on the verge of 50 ups and downs.

Chris Williamson, a IHS economist, said that in May, the manufacturing industry experienced the most difficult month in nearly 10 years. The slowdown in manufacturing expansion will further drag down the US economy.

The revised data released by the US Commerce Department showed that the US real GDP increased by 3.1% at an annual rate in the first quarter of this year, down 0.1 percentage points from the first forecast data released earlier.

Analysts believe that the economic growth prospects in the second quarter of the United States are uncertain because of the drag on the trade situation and the weakening effect of tax reduction policies.