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unit:Chizhou Dongsheng Pharmaceutical Co.,Ltd.
        Zhejiang Dongsheng New Material Technology Co.,Ltd.
        Huangyan Yannian Pharmaceutical Chemical Co., Ltd.,
Address:21 Shangsi Street , Huangyan , Zhejiang , P.R. China
Telephone:0086-576-84292571,84292561
FAX:0086-576-84292560
URL:http://www.dspharmchem.com
E-mail:ksz@dspharmchem.com / sales@dspharmchem.com / sales1@dspharmchem.com