SHANA (Tehran) -- The photos show the third day of the 27th Iran International Oil, Gas, ‎Refining and ‎Petrochemical Exhibition, also ‎known as Iran Oil Show 2023, inaugurated in a ceremony in Tehran on May, 17, 2023. Some 200 companies from 13 countries have taken part in the exhibition which will be open to visitors from 9:00 a.m. to 5:00 p.m. (0530 to 1330 GMT) until Saturday, May 20. ‎