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    The professional contract certificate of petrochemical equipment and pipes
    The certificate for manufacturing the pressure tanks
    The import and export certificate of international trade
    The licence of safety production
    CCS certificate
    Inspection certificate of boiler
    ISO14001:2008
    ISO9001:2008
    OHSAS18001
    The national electric CSA NERLIC of vapor recovery
    The utility model patent of bulk system of AHTS
    The utility model patent of Environment-friendly biological filter tank

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