Rules of Origin require change in tariff classification or regional value addition thresholds for SAFTA product eligibility. The Annex prescribes product-specific origin criteria by HS heading: listed products must meet a change in tariff classification at the four-digit (CTH) or six-digit (CTSH) level, and where indicated must satisfy a minimum Domestic Value Addition (DVA) measured as a percentage of FOB value (FOB minus value of non-originating materials, divided by FOB). The table assigns, for each HS heading, either the classification requirement alone or the classification requirement together with a specified DVA threshold.