1, DuPont: American agrochemical giant, ranking 47th in the world's top 500, mainly engaged in research and development of biotechnology products in agriculture, medicine and other fields.
2. Monsanto: the world's largest genetically modified seed company, which has great advantages in cotton, soybean and genetically modified corn seeds.
3. Syngenta: Swiss Syngenta is a leading agricultural technology company in the world, mainly involved in the agricultural field.
4. Limagran: Limagran, France is one of the largest vegetable seed companies in the world.