8. Manufacturers who consider or have reason to believe that a product which they have placed on the market is not in conformity with this Directive shall immediately take the corrective measures necessary to bring that product into conformity, or, if appropriate, to withdraw it. Furthermore, where the product does not comply with the accessibility requirements of this Directive, manufacturers shall immediately inform the competent national authorities of the Member States in which they made the product available to that effect, giving details, in particular, of the non-compliance and of any corrective measures taken. In such cases, manufacturers shall keep a register of products which do not comply with applicable accessibility requirements and of the related complaints.