According to the refinery, Alireza Jafarpour said: "In order to increase the quality of diesel and increase the production of Euro 4 and Euro 5 diesel in the facility, changes were made in the operating conditions of the reactors of Isomax units and the production process was optimized."

He emphasized on the recent increase of Euro diesel production in Isfahan Oil Refining Company from 2 million liters to 4 million liters per day, saying: “Increasing the quality of this product while creating added value for the company, will have a significant impact on environmental protection and reducing environmental pollutants.”

The official announced the launch of a huge diesel refining project next year, and said: "Due to the more than 85% progress of this project, the pre-commissioning stages have started and it is expected that all 20 million liters produced in the refinery will be fully refined in accordance with the international standard of Euro 5.”