HONG KONG (Bloomberg) Ace Ltd, the Swiss insurer operating in more than 50 countries, is aiming to increase the number of agents at its venture in China to 30,000 by the end of the year from 20,000 now, said Saloon Tham, Asia-Pacific president.Acquisitions the company made in South Korea and Hong Kong are expected to double premium income in Asia excluding China, Russell Bundschuh, global president of Ace Life, told reporters in Hong Kong.