Traded under the dual commercial names flaxseed and linseed, this oilseed serves two distinct end-use markets: food-grade flaxseed destined for human consumption (valued for omega-3 fatty acid content) and industrial linseed crushed for drying oils used in paints, varnishes, and linoleum. The distinction matters for regulatory routing — food-grade shipments fall under FDA oversight, while industrial-grade material does not carry the same labeling burden. USDA APHIS phytosanitary requirements apply at entry regardless of end use, and importers should clearly declare intended use in entry documentation to streamline clearance.

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