Confidential information protection may be denied if confidentiality is unwarranted or supplier refuses authorised summary under anti-dumping rules. The rule provides that information submitted on a confidential basis to the designated authority in anti-dumping investigations will be treated as confidential and not disclosed without provider authorisation if the authority is satisfied of its confidentiality. The authority may require a non-confidential summary or reasons why summarisation is impossible, and may disregard information if confidentiality is unwarranted or the supplier refuses public disclosure or authorised summary disclosure.