Plagued by diminishing profits, Siemens is ramping up its medical device business in China and hoping to build on the success it has enjoyed to date in the rapidly growing sector. Siemens (Munich, Germany), a diversified engineering group, has been operating in China in one way or another since 1872. It now has more than 30,000 employees, 17 R&D centers and 41 subsidiaries in the country.