Mehrdad Siadat Nasab made the remarks Monday on the sidelines of Iran-South Africa joint commission meeting.
The trade exchange volume between two countries is now about $400 million, he said.
Siadat Nasab expressed hope for the commission to bring solution for banking ties and to increase trade ties between Iran and South Africa.
Siadat Nasab went on to say that about 50 firms in infrastructure, agriculture, oil and gas, banking and financial field and over 100 South African companies participated in the event.