According to official website of Query 39 Health Network, aflatoxin is a difuranyl ring toxoid produced by Aspergillus flavus, Aspergillus parasiticus and other strains, and it is the strongest chemical carcinogen found so far. It mainly grows in humid and warm environment and often exists in moldy peanut, corn, rice, soybean, wheat and other grain and oil products, which has strong toxicity and carcinogenicity.