Business Professional is two free elective in Chinese, Chinese novice I and II, but for the professional economic and trade in China, then it is not the third course.
Business Chinese Professional is two doors free electives, Chinese beginner I and II, but for professional behind China's economic and trade established, then there is no this third course.
Professional business Chinese is a two free elective, Chinese learning I and II, but for the establishment of a professional China behind economic and trade, it is not third courses.