Secure storage requirement clarified: units must retain duty free goods on unit premises and rewarehousing references removed. Amendment replaces references to bonded premises with premises of the unit, omits requirements and references to the rewarehousing procedure, substitutes condition (vii) to require a unit to have and declare a premises for secure storage of duty free procured goods and their final products, and removes all references to debonding, thereby prescribing on unit storage and a declaration obligation in lieu of bonded premises and rewarehousing arrangements.