"Given the current situation, if the JCPOA is not further implemented, the normal economic cooperation between the relevant countries will be affected," Zhang said.
The official pointed out that China hoped for preserving the deal and therefore, maintained close contacts with Russia and other European countries on the issue.
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"We hope for close consultations between China and Iran based on compliance with the JCPOA, further development of cooperation between the countries as well as business circles of both states," Zhang added.
The US move has been criticized by other parties to the JCPOA, with the European Commission launching a process of reactivation of the 1996 law that allows companies to ignore rulings of any courts outside the European Union and to recover the damages caused by sanctions "from the natural or legal person or any other entity causing the damages."