EQT Clamps Down on Supply Chain Partners, Requires ISN Cert Energy Companies | EQT Corp | Industrywide Issues | Supply Chain June 10, 2013June 10, 2013 Listen up companies that want to be part of Marcellus/Utica driller EQT Corporation’s supply chain: You now need to be ISN (ISNetWorld) certified… Please Login to view this content. (Not a member? Join Today!) Related