The MoU is expected to reduce costs, facilitate bilateral trade, eliminate the possibility of forgery and eradicate smuggling, IRICA reported on its website on Wednesday.
Popal was accompanied by a delegation of Afghan officials during his four-day trip to Iran. They arrived in Tehran on Wednesday.
The delegation also paid a visit to Chabahar Port as well as common customs borders at Sistan-Baluchestan, Khorasan Razavi and South Khorasan provinces during their stay, Financial Tribune reported.