Here is a 2024 article pointing out China doing exactly this and Ukraine making many of the blocked items at home. You might be 2 years to late with this comment. https://kyivindependent.com/as-china-weaponizes-the-drone-su...

China controls much of the integration and many of the low level components for super low cost electronics and motors. They aren't the ones controlling all the fabs for the circuits and integration can be done anywhere if you want to pay extra.

Thanks for linking this is interesting. It sounds like they are still unable to produce many of the base components though?

> most manufacturers of everything within Ukraine remain dependent on imported machining tools — traditionally Chinese, but increasingly Indian and, for those who can afford it, European.

But for the cheapest components, simple base-line products like transistors, circuit boards, wiring, or solar cells, nobody can yet step up to the scale of China’s mass production.