That link points in to empty space, and even if it didn't I highly doubt you'll find a single documented case of a foreigner operating a business in China that was jailed, unless they were doing something illegal.
Simply asking for resources with a statement that you'll be forced to leave if you can't work will most likely not result in a jail sentence or even any action at all.
Without proof that's just scaremongering about China.
We all know China has human rights abuses, but if you read the charter on human rights then you'd know that there is almost no single country that does not have their share of that.
http://www.amnestyusa.org/us-human-rights/page.do?id=1011100
Of course I can not extrapolate the experience of my friends to the whole system, but neither can you extrapolate the other way around and say that there is absolutely no reason in China at all and that a mere request would get you punished.
Unless you can back that up with proof.