PetroVietnam

Energy
Vietnam

PetroVietnam's LinkedIn page says that the company conducts activities in Iran. 

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A February 2021 publication on Lloyd's List says "National oil company Petrovietnam [is] among the owners of 10 Vietnam-flagged tankers involved in shipping Iranian and Venezuelan cargoes."

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“Asia is the main destination for crude shipped by foreign vessels, with India, China and Japan the biggest takers, but at least four international tankers are also heading for Europe. India, in particular, is taking a lead role as its demand soars and refiners such as Essar Oil, Reliance Energy, Hindustan Petroleum Corp, and Bharat Petroleum Corp enjoy good ties with Iran. The non-Iranian companies currently chartered to carry its oil include Chinese state controlled shipper China Shipping Development, PetroVietnam and Japan's Idemitsu Kosan.” (Reuters, “As Iran’s oil exports surge, international tankers help ship its fuel,” 6/6/2016)