Associated members
| Nordic Storage AB | Sweden |  |
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| Poliport | Turkey |  |
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| Solventas Technical Storage Inc. | Turkey | |
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| Scandinavian Tank Storage AB | Sweden | |
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| Ventspils | Latvia |  |
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| Dong Energy Oil Terminals | Denmark |  |
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| OLPP | Poland |  |
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| Oiltanking Hungary | Hungary |  |
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| Interchem Hellas SA | Greece |  |