Origin determination: accessories included in FOB and sets with limited non originating content may qualify as originating. Accessories, spare parts and tools dispatched with equipment forming part of normal trade practice and included in the FOB price or not separately invoiced are treated as part of the main product and attributed its origin. Sets are originating when all components originate; mixed sets qualify as originating if the value of non originating components does not exceed the de minimis threshold of the set's FOB value, and Parties must not apply the separate de minimis provision from another rule to those originating components.