Stoppage of production at the Kangan Refinery; A new warning for "Tavan" The Tavan Petrochemical Group company, under the symbol "Tavan", announced the cessation of production of its subsidiary Kangan Petrorefining by revealing important information of Group B. The date of the event announced in the report is October 28, 1405. The notification confirms that the outage has occurred, but the information provided regarding the details of the outage is limited.