They might find a credible partner with a background in China of being a Fair partner. A known Bio-Tech Giant in China, who because of world opinion must maintain higher standards.
That would be one solution - Find the Golden Goose who is also honest.
If AMBS picks the right partner in China there is nothing to worry about.
I know about China personally because its how i make my living. (Other Industry) but There are many serious companies who take pride in conducting good business. Again time will tell.