Pre-authenticated CT-3 booklets simplify excise exemption procurement for export oriented units, with post-issue verification requirements. The circular prescribes issuance of pre-authenticated CT-3 booklets to export oriented units and redesigns the CT-3 into three parts: Part I for retention by the Central Excise officer of the DTA supplier; Part II to be sent by the unit to the Range Superintendent within twenty-four hours of requisition together with material receipt intimation to enable verification of AR-3A forms and issuance of re-warehousing certificates; and Part III for retention by the unit for record and verification.