Iran is going to sign the final version of a contract with China for modernization of a heavy water reactor that Tehran has undertaken to redesign under a lasting nuclear deal with world powers, Head of the Atomic Energy Organization of Iran (AEOI) Ali Akbar Salehi said.

In an interview with ICANA on Tuesday, Salehi said the contract with China to modernize the Arak reactor is going to be finalized in Vienna within the next week.