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-...

China banned companies from buying the made-for-China 6000D.

I'm sure they have knowledge of it being backdoored or underpowered/buggy.

IIRC they ban companies that got funding from china's government. i.e. they don't want their investment in AI to go to NVIDIA but to local chipmakers