I see girls who may or may not be 18 but who are clearly of an age old enough that they may choose to work, working in a clean, organized environment while wearing adequate protective gear. Quite far removed from a "sweatshop" or "slaving" away.
You're jumping to a lot of conclusions based on a photograph and your misunderstandings of child labour and the physical attributes of other ethnicities.
By your definition the 16 year old immigrant who just served me my lunch at McDonald's is a slave in a sweatshop.
I am definitely not saying that there are not poor working conditions that we are not seeing, be it at Foxconn or elsewhere, but I'm not sure how you are extrapolating your comments from this particular photograph.