How likely is China to have backdoors in Hardware (and in what parts specifically)?

someone mentioned hardware backdoors most likely to be limited to CPUs,
Intuitively I'd argue GPUs, SSDs, Motherboards, RAMs etc might be just as likely to be affected during assembly.


What do we know about hardware manufactured (or even assembled) in china as a privacy/security risk?

assembly backdoors china cpus etc gpus hardware parts privacy risk security security risk