The ExOne Company is a 3D printing manufacturer providing 3D printing machines, products and services to industrial customers across the world. The company provides its services and products to clients from a wide range of sectors including automotive, aerospace, energy and heavy equipment. The company was founded in 2005 as a spin-off of the Extrude Hone Corporation, and employs 311 workers. The ExOne Company is headquartered in Pennsylvania, U.S.