https://www.zonebourse.com/cours/action/SIGDO-KOPPERS-S-A-10697260/actualite/Sigdo-Koppers-S-A-annonce-ses-resultats-pour-le-quatrieme-trimestre-et-l-exercice-clos-le-31-dec-39652437/?utm_source=telegram&utm_medium=social&utm_campaign=share