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.