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    Qualification

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    Hebei Cangzhou Hengtong Tubing Co., Ltd

    Tel:010-56128368

    Fax:010-84958522

    E-mail:htsales2013@gmail.com

    Galaxy SOHO,Building D,Room 50610,Chaoyangmennei Avenue,Dongcheng District,Beijing

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    Invention Patent certificate
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