Origin determination requires regional value content or tariff classification change for preferential tariff treatment under CECA rules. Rule 5 treats products as originating if non originating inputs do not exceed sixty five per cent of FOB value and the product undergoes a tariff classification change at the six digit HS heading, or if it satisfies Product Specific Rules in Annex B, provided the final manufacturing step occurs within the exporting Party and Rules 7 and 10 apply. Regional value content can be demonstrated by the Direct Method (originating materials plus direct labour, direct overhead and profit as a percentage of FOB price) or the Indirect Method (percentage share of non originating materials in FOB price); non qualifying material value is apportioned where applicable.