11. Each Party shall provide that where it determines that a certain good imported into its territory does not qualify as an originating good based on a tariff classification or a customs value applied by the Party to one or more materials used in the production of the good, which differs from the tariff classification or customs value applied to such materials by the Party from whose territory the good was exported, the Party's determination shall not become effective until it notifies in writing both the importer of the good and the person that completed and signed the Certificate of Origin for the good of its determination.
12. A Party shall not apply a determination made under paragraph 11 to an importation made before the effective date of the determination, provided that:
(a) the customs administration of the Party from whose territory the good was exported has issued an advance ruling on the tariff classification or on the customs value of such materials, or has given consistent treatment to the entry of such materials under the tariff classification or customs value at issue, on which a person is entitled to rely; and
(b) the advance ruling or consistent treatment was given prior to notification of the determination.
13. Where a Party denies preferential tariff treatment to a good pursuant to a determination made under paragraph 11, it shall postpone the effective date of the denial for a period not exceeding 90 days, provided that the importer of the good, or the person who completed and signed the Certificate of Origin for the good, demonstrates that it has relied in good faith to its detriment on the tariff classification or customs value applied to such materials by the customs administration of the Party from whose territory the good was exported.
Article 507: Confidentiality
1. Each Party shall maintain, in accordance with its laws and regulations, the confidentiality of confidential business information collected pursuant to this Chapter and shall protect that business information from disclosure that could prejudice the competitive position of the persons providing the information.
2. The confidential business information collected pursuant to this Chapter may only be disclosed to those authorities responsible for the administration and enforcement of determinations of origin, and of customs and revenue matters.
Article 508: Penalties
1. Each Party shall maintain measures imposing criminal, civil or administrative penalties for violations of its laws and regulations relating to this Chapter.