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    Telephone：+86 (10) 64517637

    E-Mail：office@cbtgc.com

    Address：No. 30, North Third Ring East Road, Chaoyang District, Beijing

    Post code：100013

    Telephone：+86 (10) 64517637

    E-Mail：office@cbtgc.com

    Address：No. 30, North Third Ring East Road, Chaoyang District, Beijing

    Post code：100013

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