The global economy flashed clearer warning signs on Tuesday as a wave of data showed manufacturing stuck in a slump, exports falling and sentiment sliding.

With a trade war between the US and China still raging, industry executives from Japan and Russia to Germany and Italy complained of contracting business, while the World Trade Organisation cut its forecast for commerce to the lowest in a decade.

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The spectre of deflation resurfaced as South Korea, a bellwether for international trade, reported a drop in consumer prices, and the Reserve Bank of Australia cut its interest rate to a record low and said it may ease further.

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Although a measure of Chinese manufacturing improved, the overall tone was of the world economy failing to rebound from the slowdown that has plagued it for the whole of this year amid the mounting trade tensions and rising Brexit risks. That leaves the U.S. and China and also the U.K. and European Union under pressure to resolve their differences, with central bankers and governments also having to find ways to support demand.

"There can be few precedents since the 1930s of global growth prospects being affected so significantly by trade policy disruptions," Fitch Ratings Ltd. Chief Economist Brian Coulton said.

UBS Group AG economists reckon global growth is tracking just 2.3% at the moment, almost a percentage point less than the start of the third quarter. Those at Danske Bank are warning there is a 30% chance of a global recession in the next two years.

While trade tensions are part of the story, there's also industry-specific issues - autos in Germany, semiconductors in South Korea - adding to the hurdles.

German car-parts giant Continental AG last month laid out a sweeping restructuring plan that could affect as many as 20,000 jobs worldwide. Japan's Kawasaki Heavy Industries cut its forecasts, citing sales to chipmakers.

Central banks around the world are fighting the slowdown with new interest-rate cuts and monetary stimulus. But they are also ramping up calls on governments to jump in too with fiscal measures, saying they can't do all the heavy lifting.

The tensions between the US and China continue to have an impact. Photo / Getty Images
The tensions between the US and China continue to have an impact. Photo / Getty Images

In the meantime, global bond investors are betting against a meaningful inflation pickup. Even with sovereign yields below zero, they are still piling into government debt, and so-called deflation trades are on the rise. Germany's 10-year borrowing costs are at minus 0.5 per cent.

The latest Purchasing Managers Indexes may reinforce those views. German manufacturers cut prices in September by the most in more than three years. In Japan, where manufacturing sentiment is declining, factories lowered selling prices for a fourth straight month. British companies warned of "Brexit uncertainty and clients routing supply chains away from the UK."

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Such an environment is worrying for central bankers in a world where inflation is already low and well short of targets. Consumer-price growth in Germany and the euro area slipped below 1 per cent in September for the first time since 2016. For the latter, that's far short of the European Central Bank's goal.

China's numbers were mixed. The Caixin/IHS Markit measure to 51.4 in September from 50.4 in August. The nation's official PMI was less upbeat -- edging up to 49.8 from 49.5.

Parts of the global economy still show resilience. Services are growing, and falling unemployment is supporting consumer spending. US-China trade negotiations remain a critical risk for the outlook, with a Chinese delegation set to visit Washington for further talks this month aimed at hammering out a deal.

"We would hear a great sigh of relief form central banks around the world if the trade situation were to be somewhat resolved," Holger Schmieding, Berenberg Bank chief economist, said on Bloomberg Television. "I'd be positively surprised if we had a lasting resolution within the next few months. Both sides want a deal, but they still seem far apart."

- Bloomberg