Stratasys subsidiaries include MakerBot and Solidscape and the Stratasys ecosystem includes 3D printers producing prototypes and parts; a wide range of 3D printing materials; parts on-demand via Stratasys Direct Manufacturing; strategic consulting and professional services; and Thingiverse/GrabCAD communities with 5+ million free design components, printable files.
Refer to the input text as context and select the correct relationship between 'Stratasys' and '3D printing' from the available options.
Options: owner of, product/material produced, stock exchange, founded by