The sponsors includeCitibank, a member of the US-based Citigroup, the Development Bank ofSingapore (DBS), and the Hong Kong-Shanghai Banking Corporation (HSBC).As major financial and banking institutions in the US and Asia, thesebanks have opened representative offices in Vietnam .
Vietnam Airlines said the purchase is part of a plan to expand its fleet to 115 aircraft in 2015 and 170 in 2020./.