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Acetoacetic Acid (4)CAS RN:541-50-4
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American Kangen Biological Science &Technique (China)Developing Co.LTD.Telephone:86-21-58787750
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Hangzhou Shuyuan Pharmaceutical Technology Co., Ltd.Telephone:+86-571-86066502;18958062155
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Alcan ChemicalsTelephone:+1 (203) 541-9200
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ASV - innovative Chemie GmbHTelephone:+49 3494 632122