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    2022-06-27 S M L

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    Tel：86-10-57811073

    Email：hwch@cbmf.org

    Web：www.xx0539.com

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    Address：No. 11, Sanlihe Road, Haidian District, Beijing
    Tel：8610-57811569, 57811073
    Email：msc@cbmf.org
    All rights reserved by China Building Materials Federation Beijing ICP Bei No. 11000913 - 1 Jinggong Wang Anbei No. 1101080204072
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