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  • Address: No.16 West 4th－Ring Mid Road, Haidian

  • District, Beijing

    Zip code： 100036

    Tel：+86-10-51862188

    Fax：+86-10-63984785

    Website：sddajy.cn

Head Office：No. 16-5 Xisihuan Zhonglu, Haidian District, Beijing 100038, China

International Business System：15 First Area, Fangchengyuan, Fengtai District, Beijing 100078, China