I recently bought the Asia release of Okami: Zekkeiban for PS3 and tried to add it as a new item, but in the platform drop down, there doesn't seem to be any option to select this as a region. There is one for China, but as far as I know, this isn't a valid region for PS3 - Asia addresses the Hong Kong market, but also pretty much anywhere that's in Asia and not Japan (India, for instance).
I'll probably just mark it as China for now, but I'd be interested in other suggestions on this?