TEHRAN The seventh international exhibition on oil, gas and petrochemical industry will be inaugruated on April 20.

The Public Relations Office of the Oil Ministry said in a press release that 412 Iranian and 345 foreign comapnies as well as high-ranking officials will take part in the exhibition, to be held on the permenent grounds of the Tehran international trade fairs.

The exhibition will be open to the public from 10 am to 6 pm. It will run through April 24.