The difference between grade a and aa of green food

Different signs, different standards, etc.

1, the signs are different: A-level green food signs are green characters on a white background, while AA-level green food signs are white characters on a green background.

2. Different standards: Grade A green food is allowed to use safe fertilizers and pesticides for a limited time and limited varieties in the production process. AA-grade green food does not use chemically synthesized fertilizers, pesticides, veterinary drugs, feed additives, food additives and substances harmful to the environment and health in the production process.