Iran wants China's help to resolve tensions and unrest in the Middle East and is ready to play host to more Chinese firms once sanctions against it are lifted.
Iranian Foreign Minister Mohammad Javad Zarif made the comment in Beijing on September 15 at the start of talks with his Chinese counterpart, Wang Yi.
The deal reached between Tehran and world powers in July calls for the lifting of international sanctions against Iran in return for Tehran curbing its nuclear program, which the West has suspected was aimed at developing nuclear weapons.
China is the biggest customer of Iranian oil and Zarif said their economies were "complementary."
The two countries faced "similar challenges as well as opportunities," he said.
Wang said China would fulfill its promises and play an active and constructive role in implementing the nuclear agreement, which Beijing helped negotiate.
