Alfred Bernard Nobel is a Swedish chemist, engineer, inventor, military equipment manufacturer and explosive inventor. Nobel did own Bofors before his death. This company has a history of 350 years. Before that, it mainly produced steel. After Nobel owned Bofors, he changed the company's main product direction to produce military products. During World War II, many products of this company were authorized to be produced in many countries and were widely praised by the military. Nobel has 355 patented inventions in his life, and has opened about 100 companies and factories in 20 countries on five continents, such as Europe and America, and accumulated huge wealth. One year before his death, Li Zhi used most of his legacy (about US$ 9.2 million) as a fund, divided the annual interest into five parts, and set up five prizes (namely the Nobel Prize) for physics, chemistry, physiology or medicine, literature and peace, and awarded them to people all over the world who have made great contributions to mankind in these fields. Among them, explosives are the most famous one. Actinide, an artificial element, is named after Nobel.