Chinatrust Financial Holding Co. (2891.TW) is capable of acquiring and integrating American International Group Inc.'s (AIG) Taiwan unit, Chinatrust's chief investment officer, Daniel IK Wu, said Tuesday.

Chinatrust Financial is among the companies interested in buying AIG's Nan Shan Life Insurance Co., Taiwan's second-largest life insurer by gross premiums after Cathay Life Insurance.

The buyers are doing due diligence on the firm before putting in bids before the end of August.

Bain Capital LLC, Oaktree Capital Management LLC and Morgan Stanley's private-equity unit are in talks with local firm Chinatrust Financial Holding Co. on bidding for Nan Shan Life, people with knowledge of the matter said late July.

-By Perris Lee Choon Siong, Dow Jones Newswires; +8862-2502-2557; perris.lee@dowjones.com