SHANGHAI, July 27 (Reuters) - China's MicroPort Medical (Shanghai) Co. Ltd. is preparing a U.S. initial public offering worth up to $150 million, in the latest of a string of Chinese companies making their way to market in the United States. The offering, expected to raise $100 million to $150 million, is expected to debut in the fourth quarter of this year or in early 2007, one source familiar with the deal said on Thursday, speaking on condition of anonymity.
