Other announcementsCommunication of ALTEO Nyrt on the registration of the merger of district heating subsidiaries in the company register – 2019.12.20. Communication of ALTEO Nyrt on the registration of the merger of district heating subsidiaries in the company register ALTEO Nyrt. – corporate events calendar 2020 – 2019.12.20. NKP prospectus and announcement – ALTEO NKP/2029 – 2019.12.31