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2,3-Butanedione (14)CAS RN:431-03-8
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Daming Changda Co.,Ltd.Telephone:+86-310-5102000
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Dalian Advantage International Co.,Ltd.Telephone:+86-411-82808830 82807982
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Jiaxing Promo-Creat ChemicalsTelephone:0086-573-82850871
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Changzhou Xuanming Pharmaceutical Technology Co., Ltd.(Changzhou Xuanming chemical Co., Ltd.)Telephone:+86-519-85525329