Chinese Foreign Ministry spokesman Liu Jianchao said China hopes that talks in Moscow on a Russian proposal aimed to help resolve the standoff will be successful.
Iranian and Russian negotiators are discussing Russia's offer to enrich uranium for Iranian power plants on its soil to allay international fears Iran may be seeking to develop nuclear weapons.
The talks are seen as a last chance to resolve the crisis before Western governments seek UN sanctions.
China, which has increasingly lucrative energy ties with Iran, is seeking a negotiated solution to the standoff.
(Reuters, AFP)