As of June 2021, the TFL Group has acquired the LANXESS OLC business. Due to the change of ownership, the certificates for the integrated management systems for quality ISO 9001 and environmental protection ISO 14001 for the productions sites expired. The production sites in Filago, Italy and Changzhou, China closed their recertification process end of 2021. Now, the biggest site concerned, TFL Ledertechnik GmbH, Leverkusen, followed their lead.