On January 30, 10 years after Celanese was first listed on the New York Stock Exchange (NYSE), Chairman and CEO Mark Rohr and 14 employees from around the globe met to commemorate this milestone and ring the NYSE closing bell. It was an honor and privilege to visit the world´s most prestigious securities trading floor. As an employee, it doesn’t happen every day to have a chance to spend a few days with the company’s CEO, and what’s more in such a special setting…