1. Pfizer: an American multinational pharmaceutical company, mainly engaged in the research and development and production of patented drugs, with products covering the fields of chemical drugs, biological drugs and vaccines.
2. Johnson & Johnson (Johnson& Johnson): U.S. health care company, business scope includes pharmaceuticals, medical devices and consumer products and other fields, with a wide range of product lines and brands.
3. Novartis: a Swiss pharmaceutical company with competitive advantages in areas such as patented drugs, generic drugs, eye care and biotherapeutics.
4. Merck&Co: an American pharmaceutical company, mainly engaged in the development and production of prescription drugs, vaccines and animal health products, with in-depth research in the fields of cancer, diabetes and infectious diseases.
5. Sanofi (Sanofi): French pharmaceutical company, business scope includes vaccines, oncology, immunology and rare diseases and other fields, with a number of well-known brands and patented drugs.
These companies have strong competitiveness and good market prospects in the pharmaceutical field. However, before investing, make sure you conduct thorough research and pay attention to factors such as the company's financial position, market competitiveness, and R&D progress. At the same time, do not forget to diversify your investment to minimize risk.