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6-Aminopenicillanic Acid
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Shanghai Wansheng Biotechnology Limited
XI'AN ZHONGSHI BIOENGR CO.,LTD.
Shaanxi Dideu Medichem Co. Ltd
MANALI CHEMICALS
Hubei DaTong Biological Chemical
Baltrac Ltd.
Dolder AG
Sandoz GmbH
Nantong Chem-land Co., Ltd.
Shandong Zhishang Chemical Co.,Ltd