Foxconn recently inked an agreement with Sony to learn how to make the new touch screen for the Apple iPhone. New reports have surfaced that show that Foxconn wants to completely take over the iPhone manufacturing business. Currently Foxconn's Zhengzhou produces about 200,000 iPhones per day which accounts for 70% of production.
If Foxconn has their way, they would like to double that plant's output to 400,000 a day. With this increase comes the risk of damaging workers' health or having to hire additional workers. It remains to be seen just how Foxconn intends to increase the production of this plant. It's current productions account for 52.7 percent of the total exports of the Henan province.
This is great for Foxconn if they are able to. But it's not the best strategy for Apple. Think about what would happen if there were a fire at the plant and all of a sudden there was no iPhone being manufactured. It's unlikely that this would happen as I'm sure there are plans in place to prevent it, but it shows that Apple shouldn't put 100% of production into one company or factory.