I'm sure about the high volume low cost part, even for iPhones, Macs and all kinds of modern consumer electronics. The Chinese companies assembling these are making pennies on the dollar compared to what the companies that design and market them sell them for. For example, it may cost Apple around $30 to manufacture and build an iPhone in China [1]

http://www.asymco.com/2012/02/22/the-iphone-manufacturing-co...