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

It is on top of 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 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.

Glass for every generation of iPhone, including iPhone 11 and iPhone 11 Pro has been made at Corning’s Harrodsburg, Kentucky plant.

Wendell P. Weeks, Corning’s chairman, chief executive officer and president, said: “This Advanced Manufacturing Fund award will allow us to develop groundbreaking new glass innovations, while also expanding our manufacturing capabilities.

“Most importantly, our ongoing collaboration allows us to create vital new capabilities for end users and continue pushing the boundaries of what is possible well into the future.”