The company list can be found on Engineering Careers. Within your account, select 'Events', 'Career Fairs' from the left side of the page. Then select 'SWE/TBP Career Fair 2020' and click 'See Who's Coming'. To access the company list in excel format, within your account select 'Resources', 'Resource Library', and then click on '2020 SWE/TBP Career Fair Company List'.
The list and maps are also available on the new app. Download 'Career Fair Plus' from the App Store or Google Play Store then search for the University of Michigan and click on the Fall 2020 SWE/TBP Career Fair.