The context in this specific part is about the retaliations between countries. It has expanded beyond just one company when you start talking about entire economies fighting each other.
Besides, I already gave you the US hardware that China banned.
As far as I can tell news reports suggest their not invited to bid on government and SoE contracts, but their China revenue is far from zero so they obviously have not been banned from consumer or regular business sales.
Considering that cisco.cn works, is publicily accessible, recently updated, and lists some products, this 'ban' seems impossible to believe: https://www.cisco.com/site/cn/zh/index.html
Where did you source this information?