AstraZeneca is a leading pharmaceutical company in the world, which was formed by the merger of AstraZeneca, a former Swedish company, and Jellicon, a former British company, on 1999. AstraZeneca provides innovative and effective pharmaceutical products for patients in six therapeutic fields, such as digestion, cardiovascular disease, tumor, central nervous system, anesthesia and respiration, among which many products are in the leading position in the world.