NEW : `` On economic growth , financial stability around the world , on nonproliferation , we have what we view as a very strong cooperative relationship with your government Iran is increasing trade and investment . Discussions are expected to cover concerns over possible sanctions on Iranian oil exports . China says its large imports of Iranian oil have nothing to do with Tehran 's nuclear program . They also talk about improving economic ties between China and the United States .
NEW : Iran is increasing trade and investment . Discussions are expected to cover concerns over possible sanctions on Iranian oil exports . China says its large imports of Iranian oil have nothing to do with Tehran 's nuclear program . They also talk about improving economic ties between China and the United States .