[panarky]

> They are not blocked

They are absolutely blocked (with the possible exception of Github).

> refuse to comply with Chinese censorship laws

And Huawei refuses to comply with US economic sanctions laws.

> Not blocked in China ...

The fact that some US companies do business in China is not evidence of anything.

It should be obvious that China denied access to their markets and severely restricted the operations of far more US companies than the US has of Chinese companies.

China's attempt to portray itself as a victim in a trade war is transparent bullshit.