AA standard
AA-level green food standard requires that the environmental quality of the origin conforms to the environmental quality standard of the origin of green food. In the production process, chemical synthetic pesticides, fertilizers, food additives, feed additives, veterinary drugs and means of production harmful to the environment and human health are not used, but technologies such as using organic fertilizers, planting green manure, crop rotation, biological or physical methods are adopted to fertilize the soil, prevent diseases, weeds and insects, and protect or improve the product quality, thus ensuring that the product quality meets the requirements of green food product standards.