الأخبار/Reuters/Bumech Deputy CEO Artur Siewierski ResignsBumech Deputy CEO Artur Siewierski Resigns٦ ديسمبر ٢٠٢٢٠٧:٢٥ UTCBBMCBumech SA BBMC:DEPUTY CEO ARTUR SIEWIERSKI RESIGNSRESIGNATION DUE TO HEALTH REASONS