University Library
Brooklyn College has some excellent screenshots on how to locate suppliers and customers of publicly held companies in Bloomberg:
https://libguides.brooklyn.cuny.edu/c.php?g=364715&p=6613630
IUPUI has PDF's of Procurement & Shipping commands:
https://iupui.libguides.com/ld.php?content_id=17433200
Grainger Engineering Library Information Center's STEM Entrepreneurship & Business Services can assist you in getting started with these and other resources. If you have any questions, please e-mail bis@library.illinois.edu.