The latest resolution adopted Tuesday invalidates the past 12 resolutions the board members adopted in the past.

IAEA chief Yukiya Amano told the press conference that Iran and IAEA are working seriously to implement the deal, but it's hard to tell what day would be the implementation day, saying thousands of centrifuges has been removed while many are still needed to be removed.

He said the agency still need weeks to verify Iran's implementation of Tehran's relevant commitment under the deal after Tehran finishes the work.

"The Chinese delegation welcomes the resolution just adopted by the Board of Governors," said Cheng Jingye, China's ambassador to IAEA, in the board meeting, adding "We are confident that the adoption of the resolution will be positive in facilitating the smooth launch and implementation of the JCPOA... China expects that the Agency's resolution will turn a new chapter in its relationship with Iran."