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RELS or Related Securities displays a comprehensive overview of a security's issuer, including company description and fundamentals, debt obligations, equities, and related financial instruments. Critical information within a supply chain includes knowing the ultimate parent company for a supplier or customer and knowing the major investors in companies that are part of the supply chain. If a potentially hostile country owns a supplier or customer in the supply chain or has a major investment in one of these companies, this can be a possible weakness in the supply chain.
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library.doc.gov
An official website of the U.S. Department of Commerce