What's your best guess? Jim Hamm questions, "Where was your MacBook Pro — and all its innards — built? It took some real detective work by the author of this article to find that out for his MacBook Pro. This, or a similar scenario would probably apply to your computer as well, no matter the brand or model. It's a real world economy we live in."
Scroll down to the end of the article to find a link to a previous article with photos.