Iran's Foreign Minister Javad Zarif has started a diplomatic tour to search assurances that signatories to a landmark nuclear offer does reverse it even with its own abandonment from the US.

"China is highly concerned with the direction of the Iranian nuclear issue and is willing to maintain communication with all relevant parties, including Iran", Geng Shuang, spokesman for China's foreign ministry, said ahead of Zarif's arrival.

"The advantages from the Iranians' point of view is that they should have some benefits from economic participation and economic engagement with us in the west".

"I have travelled to China in a bid to meet with the remaining members of the JCPOA because China has always been a friend of rainy days", added Mr. Zarif.

Iran has expressed its opposition to Trump's move.

As he arrived in Beijing, Zarif said, "we will discuss the decision that Iran should take", according to the semi-official ISNA news agency.

China would not be complaining deep within because of the US's reckless retreat from the Iran deal. Germany and France have significant trade links with Iran and remain committed to the nuclear agreement, as does Britain, and the three countries' foreign ministers plan to meet on Tuesday to discuss it.

The current tensions around the Iranian nuclear deal follow an announcement by US President Donald Trump that the United States would pull out of the deal.

Iran's main concern is that renewed USA sanctions will have a far-reaching impact on the willingness of non-American companies and banks to deal with Iran, crippling its trade, oil exports and an already strained economy.

On May 8, President Trump announced the United States withdrawal from the Joint Comprehensive Plan of Action (JCPOA) which limited the country's uranium enrichment in exchange for sanctions relief and imposing the highest level of economic sanctions on Tehran, triggering global outcry.

"For the first time, Iran has the chance to show the world they are not the rogue nation they are always presented as, that they negotiated in good faith and keep to their commitments", said Karim Emile Bitar of the Institute for worldwide and Strategic Studies in Paris.

In a statement, foreign Minister Wang Yi says China is an important country in the agreement, and the country has done a lot of work to the conditions of the contract have been achieved and implemented.

JCPOA was implemented in 2016 after five permanent members of UN Security Council, China, France, Russia, United Kingdom and US plus Germany reached an agreement with Rouhani's government to lift global sanctions imposed on the Islamic Republic in exchange for Tehran to curb its nuclear program.