As part of last week’s Made in America events at the White House, President Donald Trump welcomed three companies to the effort: Merck, Pfizer, and Corning.

“These three companies are announcing that pharmaceutical glass packaging will now be made in America,” the president said. “That’s a big step.”

The three are jointly creating an advanced pharmaceutical glass packaging operation, with an initial investment of $500 million and the creation of 1,000 new jobs in existing facilities in New York and New Jersey and a new manufacturing plant in the southeast United States.

“Eventually, the companies here today expect a total investment in this initiative to reach at least $4 billion and create some 4,000 American jobs,” said Trump. “This initiative will bring a key industry to our shores that for too long has been dominated by foreign countries.”