Fermentation level is the key classification driver here: black tea that has undergone full oxidation and partly fermented teas (such as oolong) that fall outside the green-tea heading both land in this SITC category, whether or not flavoring agents have been added. FDA regulates imported tea as a food product, and shipments may be subject to port-of-entry examination for pesticide residues, filth, and labeling compliance. Blended or flavored varieties require careful ingredient documentation to confirm the tea basis remains the primary component for classification purposes.

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