Britain surprised some allies last month in deciding to join the AIIB, and was quickly followed by Germany, France and Italy.

Among the Group of Seven (G7) industrialized countries, the United States, Japan and Canada remain as absentees.

Washington had cautioned nations about joining the bank, seen as a rival to the U.S.-dominated World Bank, citing what it called a lack of transparency, doubts about lending and
environmental safeguards, and concerns over Beijing's influence.

"The AIIB has 57 countries as founding members, among those 37 are Asian countries, 20 are countries from outside the region," China's Vice Finance Minister Shi Yaobin cited in a interview with state media published to the ministry's website.

Shi added representatives from member countries would meet again at the end of April and May to agree upon an AIIB charter draft and "sign the charter by the end of June".

Beijing says it will not hold veto power inside the AIIB, unlike the World Bank where Washington has a limited veto.

Beijing has also cited a Board Of Governors will control the operations of the new bank.
Founder members will initially pay up to one-fifth of the AIIB'S USD 50 billion authorised capital, which will eventually be raised to USD100 billion.

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