Non-qualifying operations limit origin status: preservation, simple packing, mixing, assembly and slaughter do not establish origin. A product does not attain originating status merely by undergoing preservation and conditioning operations, simple cleaning, sorting, packing or assembly, affixing marks, basic cutting or repacking, simple mixing where components are non originating, slaughter, mere dilution, or any combination of these; such operations are regarded as insufficient working or processing for origin purposes.