SHANGHAI, Nov 17 (Reuters) - The former chairman of Kangmei Pharmaceutical Co Ltd (600518.SS), Ma Xingtian, has been sentenced to jail for 12 years, state news agency Xinhua reported on Wednesday. Ma was sentenced for manipulating the stock market, violating or failing to disclose important information and offering bribes, Xinhua reported. Former Vice Chairman Xu Dongjin and 10 other related persons have also been sentenced to jail, Xinhua said.