THE 23 th IRAN INTERNATIONAL OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION Asaluyeh OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION -1396 THE 22th IRAN INTERNATIONAL OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION Asaluyeh OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION -1395 THE 20 th IRAN INTERNATIONAL OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION Shiraz OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION THE 14 th IRAN INTERNATIONAL OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION THE 13 th IRAN INTERNATIONAL OIL , GAS , REFINING & PETROCHEMICAL EXHIBITION