Construction materials sit in front of the loading docks at the Fuyao Glass America production facility in Moraine, Ohio, U.S., on Friday, Aug. 19, 2016.

Cao Dewang became a billionaire by making glass for the world's top carmakers, but his recent decision to move part of his operations to the United States has some asking whether the days of China as a manufacturing haven are over.

In The Beijing News on Monday, Fuyao Glass chairman Cao, 70, was quoted as saying the U.S. was a cheaper and better place to make glass because taxes were much lower than in China. His comments come as some companies are reconsidering their ­presence in China, and as U.S. president-elect Donald Trump is trying to lure firms back to the U.S. under his "Make America Great Again" slogan.