Majlis Speaker Ali Larijani said cooperation between Tehran and Beijing can help promote international stability and security.
"Cooperation between Iran and China in various areas at regional and international (levels) can serve the shared interests of the two countries and can have positive effects on the world's stability and security," Larijani said in a meeting with Chinese Foreign Minister Wang Yi in Tehran on Monday, IRNA reported.
He described the current level of relations as adequate, saying that the Islamic Republic seeks "long-term" and "strategic" ties with China and the Majlis backs efforts meant to increase cooperation.
He went on to say that joint efforts should be made to develop the "required mechanisms" to expedite the implementation of agreements and identify potential areas for cooperation.
Larijani highlighted the role of parliaments in facilitating expansion of relations and called for regular consultations to be held between the two countries' parliamentary officials.
Elsewhere, the senior lawmaker pointed to the nuclear talks between Iran and the P5+1 (the five permanent members of the UN Security Council plus Germany) and said the negotiating parties should demonstrate political will to reach a nuclear deal to settle the 12-year dispute over Tehran's nuclear work.
He added, "The Islamic Republic of Iran is serious about reaching an agreement in the nuclear negotiations and does not agree with the extension of the talks."
Iran and the six major powers are in talks to hammer out a comprehensive nuclear settlement by the June 30 deadline.
Fruitful Visit
The top Chinese diplomat, for his part, described as "fruitful" his meetings with Iranian officials during his three-day visit, which started on Saturday.
He also said Iran is an "important trading partner" for China, noting that Beijing intends to upgrade its relations with Tehran to a "strategic level".
"We should hold bilateral consultations on international issues and promote our economic and commercial relations."
On the nuclear talks, Wang said China sticks to the policy to back the "peaceful resolution" of Iran's nuclear issue and believes that a "strategic agreement" that meets the interests of the two sides should be worked out.