I might have something that could fit. Will check when I'm back at the office on Monday. The cables/connectors I have will probably not fulfil all the requirements but they will be free of charge and can perhaps be useful for prototypes.
I find more results in the broken-French-Alibaba version: http://french.alibaba.com/supplier_g...0418500_1.html This seller seems to have a lot of flex cables. Don't know if one would meet the requirements.