The core processors for PLA hardware seems to be from state owned institutes. AFAIK they have no relation with civilian companies like HiSilicon, TSMC or Tsinghua. Even if they had wanted to, they could not acquire equipment like the one detailed in this thread? The law prohibit any foreign person/organization/equipment from working on and/or providing items related to national security. Unless there is a talk of an official sale where the govt has approved purchase of these specific machines to the defense industry, it is not really relevant to strategic defense.