Xinhua world economic news summary at 0930 GMT, March 31

Development Bank (ADB) has approved a 450 million U.S. dollars loan to Indonesia to help Bio Farma, a state-owned vaccine supplier, procure and deliver safe and effective vaccines against the coronavirus disease (COVID-19), the Manila-based bank said on Wednesday.
   
The ADB said the Responsive COVID-19 Vaccines for Recovery (RECOVER) project will fund the purchase of at least 65 million doses of COVID-19 vaccine for priority groups determined by the Indonesian government. (Philippines-ADB-Indonesia)
  
SEOUL -- South Korea's export volume kept rising for six straight months in February owing to strong demand for semiconductors and transport equipment, central bank data showed Wednesday.
   
The export volume index stood at 109.26 in February, up 4.2 percent from a year earlier, according to the Bank of Korea (BOK). It continued to increase for six months since September last year. (S.Korea-Export Volume)
   
HANOI -- Vietnam recorded an estimated two-way trade value of 152.65 billion U.S. dollars and a trade surplus of 2.03 billion dollars in the first quarter of this year, according to the country's General Statistics Office on Wednesday.
   
Specifically, the country posted export revenues of 77.34 billion dollars and import revenues of 75.31 billion dollars, up 22 percent and 26.3 percent respectively against the same period last year, said the office. (Vietnam-Trade Surplus-Q1)
   
TOKYO -- Tokyo stocks retreated Wednesday morning as a rise in long-term U.S. Treasury yields sent U.S. shares lower overnight sparking renewed concerns about corporate borrowing costs which dented investor sentiment.
   
The 225-issue Nikkei Stock Average dropped 232.49 points, or 0.79 percent, from Tuesday to 29,200.21. (Japan-Tokyo Stocks-Morning Session)