[English Translation] September 2, 2005   Procedures Completed in Acquisition of Mingtai Fire & Marine Insurance Co., Ltd. of Taiwan Mitsui Sumitomo Insurance Co., Ltd. (President:& CEO Hiroyuki Uemura) (hereinafter “MSI”) is pleased to announce that it has duly completed today (September 2, 2005) procedures required for the transaction of MSI’s purchase of 100 percent of the outstanding shares of Mingtai Fire & Marine Insurance Co., Ltd. (hereinafter “Mingtai”) agreed with First Financial Holding Co., Ltd., a Taiwanese financial holding company, on April 22, 2005. The deal is priced at 8.4 billion Taiwan dollars (or about 28.8 billion yen). Mingtai ranks second in the Taiwanese non-life insurance industry. As a result of the deal, the MSI group has expanded its Asian operations so much that its gross premium income from the region will reach 108 billion yen, including that generated by Aviva Asia Pte Ltd., to be the largest foreign-affiliated non-life insurer in the Asian region. 1.Profile of Mingtai Head office ： No. 1, Jen Ai Road, Sec. 4, Taipei, Taiwan   President ： Steven Li Chang   Established ： September 1961   Capital ： 2 billion Taiwan dollars (about 6.8 billion yen)   Number of employees ： About 1,350   Sales network ： 17 branches and 48 sub-branches in Taiwan, and 6 representative offices overseas   Premium income ： 10,564 million Taiwan dollars (about 35.9 billion yen, as of December 31, 2003)   Market share ： 9.9 persent (ranked second in the industry) 2.MSI’s Management Participation and Acquisition Benefits (1) Mingtai’s current management system is maintained in principle, and MSI will send a small group of personnel consisted of a non-resident officer(s) on board and senior staff. They will not only supervise Mingtai’s management but transfer and share the operational know-how drawn from the MSI group to implement MSI’s strategy in Taiwan. MSI believes it will facilitate our building up a solid business base there.   (2) MSI has been actively expanding the scope of its operations in Asia, and the transaction represents an extension of the strategy there. Consequently, MSI will have an even firmer footing in the region, and our collective operations throughout the entire region make us the largest foreign affiliated non-life insurer in Asia. Also, we believe, as the basic framework and structure of the Taiwanese non-life insurance market are similar to those in Japan, the know-how MSI has gained in the Japanese market will be well applied in the process of coping with the ongoing non-life insurance deregulation in Taiwan, and will open the door to numerous outstanding business opportunities.