We used our JV partner's own VIP Travel Services company (which is tied to the Chinese national government). Unforunately, I'm not allowed to name drop here. Furthermore, I don't even feel comfortable discussing this topic with my Chinese colleagues that presumably (well, almost definitely) know how it works. What I can say is that the travel services company in question reports to my Chinese colleagues (because it is a subsidiary) and even they don't use this perk themselves. While it is possible that they just don't care (no lines for us at the regular channel anyway), I had been lead to believe that use of the actual VIP channel is a pretty big deal.

That said, I think further "research" is in order. To date, in this thread, 3 specific options have been named (RichardinSF's web link, the HK Centurion perk, and yours). My hunch is that all three are akin to UA's former concierge service (where someone meets you at the plane and steamrolls you through the normal channel). But, you never know. So, I suggest we pull our minds and our ten dollar bills together and test the waters.