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  • Supplier Assessment

    Issuing authority : Alibaba.com

    Valid period : 2015-07-24 - 2016-07-24

    Alibaba.com Assessed Supplier

  • HGV认证证书

    Certificate No : 05313Q20633R1M

    Issuing authority : 北京恩格威认证中心

    Valid period : 2013-12-26 - 2016-12-26

    热镀锌高频直缝焊管的生产 (Hot dipped galvanized steel pipe producing )

  • BV certificate

    Certificate No : 10592862-P+T

    Issuing authority : Alibaba

    Valid period : 2015-07-23 - 2016-07-23

    Director For Burea Veritas Certification Greater China

  • ISO9001(2008)

    Issuing authority : NGV

    Valid period : 2013-12-26 - 2016-12-26

    Quality Management System (GB/T19001-2008/ISO9001:2008)

  • API Certification

    Certificate No : 5L-0552

    Issuing authority : American Petroleum Insitute

    Valid period : 2007-01-22 - 2016-01-22

    Certificate of Authority to use the official API Monogrom