How is that any different to any big city? 470,000 residents, what is the suicide rate in a typical western city of that size?
I'm not making light of the conditions at Foxconn and Hon Hoi, but the numbers don't seem that high for a population of that size - in 2010 I checked it against the average for China and it was something like half the per thousand rate for the whole of China. That doesn't mean that they don't have a problem, but they seem to have fewer issues than China as a whole.
That isn't something to brag about and it doesn't mean that they can't strive to be better, but it doesn't seem that Foxconn has more problems than other companies or the Chinese population in general.
I've worked in large companies in the UK and there were suicides among the workers there as well.