(Caption:) Microsoft stamped "Manufactured in Portland, OR, USA" on the Surface Hub (which has actually been made in Wilsonville.) Now, production is apparently moving to China.(Microsoft photo) Just two years ago, Microsoft cast its Wilsonville factory as the harbinger of a new era in American technology manufacturing.The tech giant stamped, "Manufactured in Portland, OR, USA" on each Surface Hub it made there. It invited The New York Times and Fast Company magazine to tour the plant in 2015, then hired more than 100 people to make the enormous, $22,000 touch-screen computer.But last week Microsoft summoned its Wilsonville employees to...