The unionpay file in post #141 says "00010344 ","国际业务平台". Actually more detailed than the usual ones you've seen.

As to the Bank of Beijing link, I really can't figure it out.
AFAIK there is no BoC ownership in BoB http://static.sse.com.cn/disclosure/..._n.pdf#page=45
So is this some sort of sub-acquiring agreement? I'll post the q up in hongkongcard.com (sorry my Chinese is not good enough for PRC 51credit or kayou315 websites)