Testing site at 5000m altitude

         

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        The north street No149, 

        West Round 4,Haidian 

        District, Beijing,China

        Tel +86 -10 -88111936
        Fax +86 -10 -68760024
        Email bht@bht.cc

        Web

         

        http://www.bht.cc 

        http://cn.bht.cc