<http://schema.org/description>
"Most extrusion screw designers often do not design the feed section with the same rigor as other sections. This is odd since nothing goes through the screw that doesn\u2019t first go through the feed section."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/columns/dont-overlook-the-feed-section>