BEGIN:VCALENDAR VERSION:2.0 PRODID:https://www.nabaltec.de/ BEGIN:VEVENT UID:event17092025684c9a64175e02.99908860 DTSTART:20250916T220000Z DTEND:20250918T215959Z SUMMARY:ICR (Intern. Colloquium on Refractories) END:VEVENT END:VCALENDAR