Azerbaijan, Baku, March 1 /Trend M. Moezzi/
Iran has exported nearly $600 million of tar to almost 50 countries so far this year, ISNA reported.
In the first 10 months of the year (Iran's solar year ends on March 20), Iran sent 222,000 thousand tons of petroleum tar to countries including Pakistan, China, Georgia, Germany, Malaysia and Haiti.
The U.S and EU have ratcheted up sanctions against Iran. They have embargoed Iran's oil industry and petroleum products and the U.S. is pressuring other countries to stop doing business with Iran.
In late January, the EU's foreign ministers agreed to stop buying oil from Iran after current contracts run out by July 1.
The West's measures are part of an effort to make Iran answer questions about its nuclear program which it says is peaceful and civilian in nature while the U.S. and its allies contend it is not.