I believe it is very much a two-way ban, depending on the specific chips [0].
[0]: https://www.aljazeera.com/economy/2025/9/17/china-bans-tech-...
[0]: https://www.aljazeera.com/economy/2025/9/17/china-bans-tech-...
I'm sure they have knowledge of it being backdoored or underpowered/buggy.