This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Extruder Doppelschnecke Geometrie. Extruder Doppelschnecke Geometrie own work by original uploader Benutzer Chieggie Selbst gezeichnet daher keine Einschrnkung PDuserw de Chieggie Original upload log de Wdwdbot CommonsHelper de ExtruderDoppelschneckeGeometrie Chieggie bytes no gezeichnet daher keine Einschrnkung Extrusion