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さらに記事を表示（17）'}]} assistant kraruser彩票论坛userQ: What is the name of the supporting documents required for a Letter of Credit negotiation? Explain. (for International Trade/Import-Export context) answer in paragraph, short and concise, suitable for professional import-export training material. Do not use markdown or lists. Do not mention essay structure. Do not provide headings. Write as a professional trade educator. 100 words or less. English. Glossary: Letter of Credit, supporting documents. Do not use any other formatting. Only output the single paragraph. Do not reference the instructions. Do not make up document names. Ensure accuracy. Do not apologize. Do not write