Preferential tariff treatment for originating products depends on proof of origin, timely import claims, and domestic customs procedures.

Preferential tariff treatment for originating products depends on submission of a proof of origin at importation, with the importer required to claim the treatment and provide supporting documents under the importing Party's domestic procedures. Where proof of origin is not immediately available, the importer may claim preferential treatment and produce the proof and other required import documentation later, subject to domestic law and customs clearance requirements. Proof of origin must generally be submitted within the specified period, subject to suspension while goods remain under customs control and exceptional acceptance after expiry.

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