23nd INTERNATIONAL OIL,GAS & REFINING & PETROCHEMICAL EXHIBITION 28 Oct 23nd INTERNATIONAL OIL,GAS & REFINING & PETROCHEMICAL EXHIBITION TEHRAN INTERNATIONAL PERMANENT FAIRGROUND Hall 26-B, BOOTH No.613-1 Petro Kimia Arvin 22nd INTERNATIONAL OIL,GAS & REFINING & PETROCHEMICAL EXHIBITION AVL Internal Manufacturer