Taiwan-based Quanta was listed as operating Macintosh computer and iPod MP3 player assembly plants in China.
Cook, in a pair of interviews given in December, said one line of Mac computers will be made exclusively in the United States, but did not say which one.
Asked why Apple would not move out of China entirely and manufacture everything in the United States, Cook told NBC, “It’s not so much about price, it’s about the skills.”
Cook also told the broadcaster that he hopes the new project will help spur other US firms to bring manufacturing back home.
“The consumer electronics world was really never here,” he said. “It’s a matter of starting it here.”