Bayer Aktiengesellschaft is a German multinational pharmaceutical and chemical company headquartered in Leverkusen, founded in 1863. Bayer is known for its wide range of products in healthcare, agriculture, and materials science. The company specializes in the development and manufacture of pharmaceutical drugs, vaccines, agrochemicals, and highly specialized materials, such as plastics and polymers. Bayer is a leader in research and innovation, particularly in oncology, cardiology, and biological sciences. With a global presence, the company operates in many countries worldwide, focusing on sustainable and innovative solutions for health and agriculture.