Proto Labs, Inc. is an e-commerce driven digital manufacturer of on-demand three dimensional (3D) printed, computer numerical control (CNC) machined and injection-molded custom parts for prototyping and short-run production. Its geographic segments include the United States, Europe and Japan. It targets its products to the product developers and engineers who use 3D computer-aided design (3D CAD) software to design products across a range of end markets. Its product lines include Injection Molding, CNC Machining, 3D Printing and Sheet metal fabrication. Its Injection Molding product line is used for prototype, on-demand and short-run production. Its CNC Machining product line uses commercially available CNC machines to cut plastic or metal blocks into one or more custom parts. Its 3D Printing product line includes stereolithography (SL), selective laser sintering (SLS) and direct metal laser sintering (DMLS) processes. It also provides low-volume sheet metal fabrication services.