BRASKEM'S 2021 FORM 20-F WAS FILED
BRASKEM'S 2021 FORM 20-F WAS FILED SãO PAULO, BRAZIL, April 28, 2022 /EINPresswire.com/ -- BRASKEM S.A. (BM&FBOVESPA: BRKM3, BRKM5 e BRKM6; NYSE: BAK; LATIBEX: XBRK) announces to its shareholders and the market that filed its Annual Report on …