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发明人朱建伟,王建平,马晓峰. "Method for the Synthesis of Sudan Blue 2" [P]. 中国发明专利, 专利号 CN 117591398 A, 授权公告日 2020-09-08.
发明人李文辉,张德明,孙丽萍. "A Process for Preparing High-Purity Sudan Blue 2" [P]. 中国发明专利, 专利号 CN 113783415 A, 授权公告日 2025-01-16.
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