naqdi, referring to the duty of the national gas company of iran to accept and issue gas deposit certificates. natural gas and liquid gas in the energy exchange said that using this financial tool has advantages, such as by creating storage tanks for the private sector , it helps to reduce the gas imbalance. on may 25, the minister of oil has given two months to the national gas company, how to supply gas through issuance of certificate of deposit in the stock exchange designed and implemented energy, based on this, iran's national gas company can purchase natural gas from private sector investors directly or indirectly through the purchase of certificates from the energy exchange, the energy exchange hall witnessed the supply of 13,200 tons of hydrocarbon products in the inner hall, two thousand tons of solvent 402 of kermanshah oil refining goes on the supply board. the supply board of the international hall also hosts 3,000 tomans, two petrochemical companies, chemi baft, 209 methanol, kaveh methanol company, 2,000 tomans, air burn , national iranian oil products distribution company and s