Apple is awarding $250 million from its Advanced Manufacturing Fund to Corning Incorporated, supplier of precision glass for iPhone, Apple Watch and iPad.

The latest award builds on the $200 million the company received from Apple’s Advanced Manufacturing Fund in May 2017. The combined investment supports Corning’s research and development into advanced glass processes, equipment and materials integral to the delivery of next-generation consumer devices.

“Apple and Corning’s rich history dates back more than a decade, and our partnership revolutionized glass and transformed the technology industry with the first iPhone,” said Jeff Williams, Apple’s chief operating officer. “This award underscores Apple and Corning’s shared belief in the vital role that ingenuity plays in creating industry-leading products, and the pride that both companies take in applying American innovation and advanced manufacturing to solve some of the world's toughest technology challenges.”

Glass for every generation of iPhone, including iPhone 11 and iPhone 11 Pro which will be available later this week, has been made at Corning’s Harrodsburg, Kentucky plant. Apple says that the newest iPhone models feature the toughest glass ever in a smartphone, as well as a back machined from a single piece of glass that allows for wireless charging.

The Harrodsburg facility serves as Corning’s global glass technology center, working with scientists at Sullivan Park in Corning, New York, to develop advanced glass solutions for next-generation technologies. Apple’s investment supports the nearly 1,000 Corning jobs created by the Apple business.

Apple says it spent a collective $60 billion with 9,000 American suppliers in 2018, supporting 450,000 jobs in all 50 states and manufacturing locations in 36 states. Every one of the company’s core products — from iPhone and iPad to Mac, Apple Watch and Apple TV — contains parts or materials from the US or is made with equipment from US-based suppliers.

To date, Apple has invested over $1 billion in American companies from its Advanced Manufacturing Fund — deploying the entire $1 billion initial investment and 20 percent of the $5 billion it subsequently committed to spend. In addition to the $450 million now awarded to Corning, other commitments include $390 million to Finisar and $10 million to the Elysis aluminum partnership.