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changzhou xuanming pharmaceutical technology co., ltd. (previous name: changzhou xuanming chemical co., ltd.)1h-indole-1-propanesulfonic acid, 2,3-dihydro-2-[2-(3-hydroxy-6-oxo-2,4-cyclohexadien-1-ylidene)ethylidene]-3,3-dimethyl- Changzhou Xuanming Pharmaceutical Technology Co., Ltd. (Previous Name: Changzhou Xuanming Chemical Co., Ltd.)
