China's foreign exchange regulator has approved asset-management units of Morgan Stanley and Prudential PLC for accounts under the country's Qualified Foreign Institutional Investor program, though the Commission didn’t disclose the quota given to each, reports the Wall Street Journal.   The program was launched in mid-2003, allowing approved foreign institutional investors to trade yuan-denominated Class A shares and bonds listed on exchanges in Shanghai and Shenzhen. More than 40 foreign institutions now have permission to invest a total of more than $7 billion in China's securities markets.