The full-service prototyping big dog: in capacity and market cap Protolabs leads the pack. They have been around since 1998, have a centralized manufacturing base of 12 facilities and provide a range of processes to fit almost any short-run production need. 3D printing is only a fraction of their business, with injection molding and CNC making up the bulk. Their focus on customer experience and turn-around time, however, spans all their services, and they are ISO 9001 certified across all their 3D printing processes.