NEW YORK, May 31, 2006 — Dow Jones Indexes today announced a component change in the Dow Jones China Offshore 50 Index.

Effective with the opening of trading on Monday, June 5, 2006, Bank of China (H Shares) will replace BOC Hong Kong (Holdings) Limited in the Dow Jones China Offshore 50 Index.

Bank of China (H Shares), whose primary business is in mainland China, will begin trading on the Hong Kong Stock Exchange on Thursday, June 1, 2006. The company ranks among the top 25 by float-adjusted market capitalization and qualifies for the fast-entry rule.

The Dow Jones China Offshore 50 Index represents the largest, super-sector leaders of companies whose primary operations are in mainland China but trade at the Hong Kong Stock Exchange, New York Stock Exchange, Nasdaq or American Stock Exchange. Stocks included in the index are H shares, red chips, ADR/ADS and Chinese stocks listed in the U.S. If a stock is traded on two or more overseas exchanges, only the listing with the highest trading volume is included in the selection universe.

The index is weighted based on float-adjusted market capitalization. The weights of individual components are capped at 10% of the float-adjusted market capitalization of the index.

Further information about the Dow Jones China Offshore 50 Index, including the component list, methodology and performance data, is available at www.djindexes.com.

Company additions to and deletions from the Dow Jones China Offshore 50 Index do not in any way reflect an opinion on the investment merits of the company.