Not according to Tim Cook:

> There's a confusion about China. The popular conception is that companies come to China because of low labor cost. I'm not sure what part of China they go to, but the truth is China stopped being the low-labor-cost country many years ago. And that is not the reason to come to China from a supply point of view. The reason is because of the skill, and the quantity of skill in one location and the type of skill it is.

https://www.inc.com/glenn-leibowitz/apple-ceo-tim-cook-this-...

Of course, he would say nice things about China like this so I take it with a grain of salt myself.