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D-Biotin (41)CAS RN:58-85-5;22879-79-4
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Hangzhou Royall Import & Export Co., Ltd.Telephone:+86-571-85829052
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Shanghai Neopharm Co., Ltd.Telephone:021-58826758, 021-58820082
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Zhejiang Fansan International Trade Co.,Ltd.Telephone:0571-88115769
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Toda Biotechnology Co., LtdTelephone:+86 755 27800161
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Fuzhou Contay biotechnology Co.,Ltd.Telephone:+86-0591-87860651
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NINGBO VITAX BIOTECH CO., LTD.Telephone:+86-0574-28855236/28805910
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NINGBO V&P CHEMISTRY CO.,LTDTelephone:+86-574-87434756
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WLP INGREDIENT INCTelephone:+86-18192489506
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He-Ro Chemicals Ltd.Telephone:(852)2317-5988
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Spec Chem Ind.Telephone:0086 25 4523390