Beijing has threatened swift retaliation against a range of European Union industries if Brussels presses ahead with an investigation into government subsidies granted to two Chinese telecoms equipment companies.

The Chinese threat was delivered at a meeting with EU trade officials in Beijing late last month that was arranged at the behest of Chen Deming, China’s commerce minister, to try to defuse a brewing trade dispute that is straining commercial relations between the two sides.

Instead, it collapsed into acrimony, with the Chinese warning their EU visitors that they would respond to any investigation of Huawei and ZTE Corp by probing subsidies granted to European agriculture, automotive, renewable energy and telecoms companies. “Put it this way: it’s not like they went for a beer after and watched football,” one person briefed on the meeting said.