By Laurie ‌Chen

BEIJING, Dec 10 (Reuters) - European firms are accelerating efforts to diversify away from Chinese supply chains as Beijing's self-reliance ‍drive and ‌export controls deepen global trade uncertainty, the European Union Chamber of Commerce in China said on Wednesday.

China's trade surplus topped $1 ⁠trillion for the first time in November, as exports ‌to Europe, Australia and Southeast Asia surged in the wake of U.S. tariffs, fuelling diplomatic tensions over unsustainable trade imbalances.

Chinese shipments to the United States dropped 29% year-on-year in November, while exports to the EU grew an annual 14.8%.

The EU's trade imbalance with China widened to ⁠1:4 in container terms, compared with 1:2.7 in 2019, the lobby group said in a report. Persistent deflation and the ongoing depreciation of the yuan ​against the euro have exacerbated European firms' trade woes.

"Probably the biggest problem we've ‌seen in the Chinese economy is that there have ⁠been 37 consecutive months of factory gate deflation," Jens Eskelund, the chamber's president, told reporters at a briefing.

"When we have this gap between deflation in China and inflation in Europe, that adds to the imbalance in currency."

Beijing's expansive ​export controls on rare earths and critical materials have "sent European businesses into crisis mode," with some firms reporting production stoppages and millions of euros in losses, the report said.

As a result, more than 70% of European firms in China have reviewed their supply chain strategies over the past two years, the report said. Of these, over a quarter are onshoring ​further into ‍China, while 10% are building alternative ​supply chains outside the country.

Sectoral disparities are stark: 80% of pharmaceutical firms and 46% of machinery makers are increasing localisation, while 33% of IT and telecom firms and 25% of retailers are diversifying away from China, according to the report.

However, 22% of European firms still import critical components from China with no viable alternatives, the report said, highlighting persistent supply chain vulnerabilities.

"When we look at the rare earth magnets in terms of dependencies, it's barely the tip of the tip of the iceberg," ⁠said Eskelund.

The group said last week that one in three member companies was looking to shift sourcing away from China due to Beijing's export control regime.

French President Emmanuel Macron ​called China's ballooning trade deficit with Europe "a matter of life or death for European industry" in an interview last week, saying he had threatened Beijing with tariffs.

The report said China's willingness to use its supply chain dominance to exert pressure on trade partners is being met with increasing pushback from affected countries, such as ‌a more "offensive" China policy from the EU.

The European Commission will make proposals next month to bolster EU industry, with requirements to prioritise locally manufactured goods that would reduce its reliance on imports from China.

(Reporting by Laurie Chen; Editing by Sam Holmes)