Foxconn is the largest oem manufacturer in the world. They are the ones that build all of Apple's product, as well as laptops for Dell, Sony, etc.
They employ 700,000 people in China - roughly 10% of the population of Hong Kong. Their security guards are former ZhongNaiHai guards - equivalent of US Secret Service that protects the President. They have their own hospital for their employees, as well as their own fire department.
Recently (2 years ago) Foxxcon's Apple division in Guanlan purchased 6000 CNC milling machines to build the Unibody chassis for the MacBook Pros. Their subcontractor, Hanwei, has another 1000 machines to take overflow work. I just find that mind boggling.