Apple sparked a bit of interest when some of the new iMacs arrived with a tag that said "Assembled in USA." May were curious just how much assembly was taking place in the United States and just how many were being assembled in the US. Apple has updated their list of suppliers and it now includes Quanta Computers located in Fremont, California.
Fremont plays host to several tech companies, including Corsair, and now plays host to a Mac assembly factory. Tim Cook has expressed the desire to bring back manufacturing of at least some Macs to the US, so this appears to be one of the first steps in that direction.
If you purchase an iMac assembled in the US, it most likely came from Quanta. Quanta is located at 44350 Nobel Drive Fremont, California, just a stone's throw from Cupertino, Apple's headquarters. It should be noted that Quanta also has a facility in Tennessee, though previous shipping labels have shown devices being shipped from San Jose, CA.