Proto Labs, Inc., together with its subsidiaries, operates as an e-commerce enabled digital manufacturer of custom parts for prototyping and short-run production worldwide. It utilizes injection molding, computer numerical control machining, three-dimensional (3D) printing, and sheet metal fabrication to manufacture custom parts for developers and engineers who use 3D computer-aided design software to design products across a range of end markets. The company was founded in 1999 and is headquartered in Maple Plain, Minnesota.