Every manufacturer of manufactured homes shall furnish to the Secretary a true or representative copy of all notices, bulletins, and other communications to the retailers of such manufacturer or purchasers of manufactured homes of such manufacturer regarding any defect in any such manufactured home produced by such manufacturer. The Secretary shall disclose to the public so much of the information contained in such notices or other information obtained under section
5413 of this title as he deems will assist in carrying out the purposes of this chapter, but he shall not disclose any information which contains or relates to a trade secret, or which, if disclosed, would put such manufacturer at a substantial competitive disadvantage, unless he determines that it is necessary to carry out the purposes of this chapter.