BAK - Braskem S.A. 2021 Q4 - Results - Earnings Call Presentation March, 22 2022 03:38 PM Braskem SA ADR The following slide deck was published by Braskem S.A. in conjunction with their 2021 Q4 earnings call. For further details see: Braskem S.A. 2021 Q4 - Results - Earnings Call Presentation