The Chinese have a list of nationalities. There is 3 layers. 1. countries from which workers are accepted without a problem. 2. countries from which the workers are sometimes accepted and sometimes not and 3. countries from which workers are not accepted.
You cannot normally get hold of this list. I have seen it once and wanted to photocopy it but was stopped. Many of the work agencies have the current list. You can try to ask them directly about your passport and they might answer you. But you have to do it unoficially over the phone and tell them, that you don't want to waist your time. Ask them if somebody with your passport or nationality was already accepted before. The chinese officials make the decisions on a clear policies, which are not unfortunately officially publishes. It is all internal and they keep changing the list all the time depending on politics.