> these are pretty low-tech chips only for industrial uses

I don't like this framing.

These aren't logic ICs but that doesn't mean they are useless or "easy".

Heck, the only countries with Gallium Nitride fabrication capabilities and knowhow are the US, China, Taiwan, Japan, South Korea, Germany, and India.

In fact, compound semiconductors and power electronics is one segment where Europe's China dependency is extremely high, as they have significant uses from automotive to PLCs to weapons systems, and China has already begun embargoing the EU's access to rare earth elements [0] and has begun enforcing sanctions against the EU's aerospace and UAV industry [1].

These are dual use technologies and a major reason why both the US and China heavily invested in compound semiconductor capacity in the late 2010s and early 2020s.

Edit: can't reply

> In 2024 Belgium closed its only semi fab, which had recently pivoted to GaN

THEMA Foundries is working in photonics, not GaNs [2]. The GaN initiative (BelGaN) failed and the only two buyers interested in buying out the property for GaN fabrication were a Chinese and Indian player [2].

[0] - https://www.reuters.com/world/china/eu-firms-brace-more-shut...

[1] - https://www.scmp.com/economy/global-economy/article/3351292/...

[2] - https://www.semiconductor-today.com/news_items/2025/apr/belg...

Germany’s Infineon opens major chip plant as EU seeks tech autonomy