The documents were signed in a ceremony attended by President Mahmoud Ahmadinejad and his visiting counterpart from Ecuador, Rafael Correa Delgado.



The letters required Tehran and Quito to cooperate in industrial and mining field as well as construction of cement factory and power plants.



The two countries would also cooperate in the fields of banking, oil, pharmaceutical, shipping and commercial activities.



At the end of the ceremony the two presidents attended a joint press conference.



President Delgado was later in the day officially seen off by President Ahmadinejad.



He is due to visit on Monday the ancient city of Isfahan and the industrial region of Assalouyeh in the southern province of Khuzestan.



The Ecuadorian president arrived in Tehran on Friday heading a high-ranking delegation to review issues of mutual interest with his Iranian counterpart and other senior officials.



In addition to meet with President Ahmadinejad, President Delgado has met with Supreme Leader Ayatollah Ali Khamenei, Foreign Minister Manouchehr Mottaki and Minister of Defense Brigadier General Mostafa Mohammad Najjar.

Tehran, Dec 8, IRNA