We are an EOU. We want to buy some capital goods earlier imported and used by a SEZ unit. The proviso to Rule 34 of SEZ Rules, 2006, at the relevant part (ii), says that in case a unit is unable to utilise goods or services imported or procured from DTA, it may sell them to another unit or to EOU/STP/EHTP/BTP, without payment of duty; or (iii) sell to EOU/STP/EHTP/BTP -- (a) on payment of IGST as applicable under section 5 of the IGST Act, 2017; and (b) without payment of duty of customs leviable thereon under the First Schedule