I think the shown samples are only early pieces that came out of the machine before it set up correctly. We know that Injection molding is a complex task so they need maybe some time to set up the machine in a way, these marks vanish. I mean, after 6 Months of making the moulds they can't produce crap like this, actualy impossible I would say.
The chinese Factory does mass production for large Companies (at least that's what Craigix sayed) and they cant produce finished cases that look like this, otherwise the Factory would be out of business very quickly.
I'm sure, they did far more complex Cases than the litle one of the Pandora, and as long it is not common to pay some bribery just to have a usable end-product, I see no problem here.
But of course I wouldn't accept a finished case that look like this, not after 6 Months, not after Craigix promised "perfect" result in any way.
Oh, by the way, I want to know why the Factory needed 2 weeks to make 1000 Cases when it was always told, they can do (around)500-1000 within one day. Do they interrupt the production to make more "important" things or do we really need 10-20 weeks until they did 10K cases?