Companhia Siderúrgica Nacional (NYSE:SID) Q4 2020 Earnings Conference Call February 23, 2021 1:00 PM ET Company Participants Marcelo Cunha Ribeiro - Investor Relations Executive Officer Helena Guerra - Head-Sustainability, Health, Safety & Environmental Affairs Benjamin Steinbruch - President of Executive Board, Chairman & Chief Executive Officer Luis Fernando Barbosa Martinez - Executive Director Conference Call Participants Caio Ribeiro - Credit Suisse Daniel Sasson - Itau BBA Leonardo Correa - BTG Pactua ...