Belgium Arrests Suspect in GaN Chip Trade Secret Theft, Escalating European Tech Control Pressure on China
nashnova research
Belgian prosecutors detained a dual Chinese-Belgian national for allegedly transferring gallium-nitride chip trade secrets to China — a case now fueling broader European momentum toward tighter semiconductor controls on Beijing.
What did the suspect allegedly do?
The man, 52, holds dual Chinese-Belgian citizenship and has been in custody since May. He was arrested at Brussels' Zaventem airport while boarding a flight to Beijing.
He held a senior research role at BelGaN, a Belgian semiconductor firm, while simultaneously serving as a director of a Chinese chip company in the same field. That Chinese firm was founded months after he joined BelGaN, backed by a Chinese investment fund.
This means → prosecutors suspect a complete pipeline: enter a European company, acquire the know-how, then replicate it through a Chinese-funded entity.
BelGaN specialized in gallium-nitride — a semiconductor material that handles higher voltages than silicon — production. Its Belgian plant was previously sold by U.S. firm ON Semiconductor. BelGaN went bankrupt in 2024.
Why is gallium nitride a sensitive technology?
GaN chips withstand far higher voltages than silicon, making them critical for EVs, aerospace, and military applications.
In plain terms = this is a textbook dual-use technology — the civilian side is fast chargers and electric vehicles; the military side is radar and electronic warfare.
This reflects a key point: semiconductor sensitivity is not just about process-node advancement. The material's end-use alone can trigger export-control thresholds.
Will this case change Europe's policy direction?
Antonia Hmaidi, project lead at Berlin's MERICS, says the case alone is unlikely to shift policy. But for those already pushing economic-security legislation, "it may be enough to confirm they are on the right track."
Joris Teer, policy analyst at the EU Institute for Security Studies, is more blunt: Beijing is pursuing self-sufficiency across semiconductors and other sectors. Without a fundamental reset of Europe's China and industrial policy, "Beijing's industrialization at others' expense will only accelerate."
Belgium's state security service earlier this year described a pattern it calls "copy to China": invest in a Belgian firm to acquire specific technology, then replicate it at greater scale inside China.
How often has this happened in Europe before?
2016 — a Chinese chipmaker bid for German GaN equipment specialist Aixtron, which supplies the U.S. defense industry. Washington blocked the deal on national-security grounds.
2022 — Dutch equipment maker ASML accused a Chinese company of selling products that potentially infringed its IP. That company was linked to a separate entity previously found to have stolen ASML trade secrets.
This means → from acquisitions to espionage to IP infringement, Beijing's pathways to European semiconductor technology keep shifting, but the objective stays the same.
What to watch next?
A second suspect remains at large; the investigation is ongoing.
The Chinese embassy in Belgium and China's mission to the EU have not responded.
The core question ahead: whether this case can push Europe toward substantive legislation on semiconductor IP protection — a domain where Europe's institutional framework still lags far behind the United States.
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