Preserved citrus products classified here — such as canned mandarin segments, preserved kumquats, or sweetened citrus peel preparations — fall outside the more specific orange-juice and grapefruit-juice headings, making product form and processing method the key classification determinants. FDA's prior-notice requirement and acidified-food regulations (21 CFR Part 114) are particularly relevant for low-pH citrus preparations packed in hermetically sealed containers. The N.E.S. scope means that any citrus variety — lemon, lime, tangerine, or others — can appear here provided it is prepared or preserved and not captured by a narrower heading. Accurate ingredient and Brix-level documentation supports both correct classification and smooth FDA admissibility review.

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