ma yunshuang, male, born in 1970, chinese, without the right of permanent abode in foreign countries, with a doctor's degree, professor-level senior engineer, is the vice president and a member of the standing committee of the crrc. mr. ma served as the deputy general manager, vice chairman & general manager, and deputy party secretary of the csr qingdao sifang co., ltd., and the director, general manager and deputy party secretary of the crrc qingdao sifang co., ltd. mr. ma has been a member of the standing committee and the vice president of the company since october 2019.