PSU Top Stories Subrat Das gets extension as CVO, OFB, Kolkata June 12, 2020June 12, 2020 LO Bureau IPoS, OFB Kolkata, Ordnance Factory Board, PSU Updates, Subrat Das Spread the love The tenure of Subrat Das (IPoS:1991) as CVO, Ordnance Factory Board (OFB), Kolkata has been extended for period of 2 years beyond 06.04.2020 i.e. upto 06.04.2022 or until further orders.