If you've ever dealt with the Chinese you'll know just how hard it is trying to get them to do what you ask, never mind all the fuckers that then want to rip your products off. Been there in the past, know the story very well. You've basically got to be looking over their shoulder all the time or they will take the piss.
Then of course, there's all of the palms that need to be kept greased... It's like the wild west out there man!