The manufacturer who has availed the benefit of an exemption notification shall use the goods imported in accordance with the conditions mentioned in the concerned exemption notification or take action under rule 7 and in the event of any failure, the Deputy Commissioner of Central Excise or, as the case may be, Assistant Commissioner of Central Excise shall take action by invoking the Bond to initiate the recovery proceedings of the amount equal to the difference between the duty leviable on such goods but for the exemption and that already paid, if any, at the time of importation, along with interest, at the rate fixed by notification issued under section 28AA of the Act, for the period starting from the date of importation of the goods on which the exemption was availed and ending with the date of actual payment of the entire amount of the difference of duty that he is liable to pay.