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A bitter battle over the future of a Chinese-owned chipmaker in the Netherlands that threatened to cripple the global car industry is a “wake-up call to Europe and the west”, the minister at the heart of the row has warned.

The six-week standoff between the EU and Beijing over Nexperia and its vital supplies of automotive semiconductors has served up a sobering lesson to world leaders over their dependency on China, says Vincent Karremans.

The Dutch economy minister says he has no regrets about the tussle and would not change his actions even with the benefit of hindsight. “There’s a lot of interest in exactly what happened,” he says. “It’s like an economic thriller.”

Detailing for the first time how the trade war unfolded, he recalls high-level exchanges with his German counterpart, the car industry and the US, as well as conversations with critical intelligence that he claims showed Nexperia was moving parts of its physical operations in Hamburg to China.

The dispute started on 30 September when the Netherlands took supervisory control of Nexperia, alleging risks to “European economic security”. The decision to invoke a never-used-before cold war law had been taken two days earlier at the highest level of the Dutch government and was enacted after detailed legal checks.

Karremans says it had nothing to do with a US move on 29 September to put Nexperia on a list of companies facing import controls. “We were absolutely not pushed or pressurised or whatever by the Americans to take action on this,” he says.

“What we heard from the Americans was they were going into [government] shutdown and they wanted to ensure Nexperia was on the list.”

The Dutch intervention triggered a furious reaction from Beijing, which for four days banned the export of Nexperia’s chips from China, most of which are finished. That in turn threw carmakers’ supply chains in to chaos, leading to production pauses in Mexico and warnings from EU manufacturers that they were “days away” from stoppages.

After the deal between Donald Trump and Chinese president, Xi Jinping, in South Korea at the end of last month cleared the way for Beijing to resume chip supplies to Europe, the crisis appears to be over. For now.

“Now, for the short term, there’s a solution … and we’re very grateful for the steps that the Chinese authorities have taken on this.” However, Karremans stresses: “If I had been in the same position, with the knowledge I know now, I would have done the same thing again.”

The Dutch chipmaker, once part of the Philips electronics group, was bought by China’s Wingtech in 2018. Concerns about its future ability to export to the US emerged in 2023 when the US notified the Dutch that they were considering putting Wingtech on an “affiliate list” of companies that could pose a threat to national security.

“These restrictions were immense, so it was in our best interests to work with the American and Chinese governments and the Nexperia Chinese shareholder to work out a solution.”

The Dutch then entered a dialogue with Zhang Xuezheng, the founder of Wingtech and chief executive of Nexperia in the Netherlands, to ensure the company’s independence. Demands included the establishment of an independent supervisory board and a requirement that Zhang no longer act as both CEO and head of human resources.

“I spoke to Mr Zhang about this in the ministry last summer,” says Karremans. “It was one of the first meetings I had as minister for economic affairs. He was telling me they were very much on board. We had a list of measures to be taken and then we would engage with the Americans and say this is a Dutch company.”

But in September, things took a dramatic turn.

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“I had people coming to my office saying: ‘Minister, we need to talk to you,’ and they told me what Zhang was doing. They said he was moving away intellectual property rights, they were firing people, and they were looking to relocate production from [Hamburg] to China.”

Asked who these people were, he says: “I can’t tell you who they were … but we have physical evidence that this [relocation] was happening.”

He argues that if Wingtech had moved its semiconductor wafer production to China, then “this interdependence that Europe had [with China] would have changed into a full dependency. That … would have been very dangerous for Europe.”

After the situation with the Chinese escalated in the aftermath of the Nexperia intervention, Karrenmans spoke to Germany’s economy minister, Katherina Reiche. “She supported our action. She was very concerned about what this meant, obviously, for the car industry.” Leaders in the EU, US, China, France and elsewhere around the world were also kept informed.

“We weren’t intending to go public on this. We wanted to solve this swiftly and silently,” Karremans says.

Beijing’s move to restore chip supplies at the weekend came after the US decided to pause sanctions for companies on its affiliate list. But the Dutch have yet to reverse out of Nexperia, with Karremans hinting nothing will happen until the first chips arrive on European shores.

“We are in direct touch with the German car industry and with other car manufacturers and clients of Nexperia. They will let us know when they receive the chips. And once the supply resumes and we are confident it will continue, then … we’ll take the appropriate steps that are needed by the Dutch government to resolve this issue.”

Karremans hopes this “will serve as a wake-up call” over the dangers of depending on one country for essential tech or raw materials. Although his VVD party finished third in last month’s general election, he will remain economy minister until a new government is formed, which could take a year.

When Wingtech was asked about the allegations that it was planning to move part of its physical production line in Hamburg to China, the company said it was pressing ahead with an investment rollout in Germany with 150 new jobs created, including 100 in R&D and 50 in production.

A spokesperson said: “Wingtech’s $200m investment plan for the Hamburg wafer fabrication facility, announced in 2024, is progressing steadily … As the new production lines start to ramp up, we were expecting to continue the expansion of our operational team, a development which has since been sidelined due to the Dutch government’s intervention.”