The research papers accepted and presented in the 2020 2nd International Conference on Sustainable Technologies for Industry
4.0 (STI 2020) have been posted on the IEEE Xplore digital library effective from 16 February 2021. The papers were published in the IEEE Xplore Digital Library in less than two months been able to bring the papers online in a minimum period of time. Congratulations to all authors, reviewers, TPC chair and members of the organizing committee.