Why is the background color of aa-level green food signs and fonts white?

Consumers should recognize the "signs" when buying such foods. The green food sign consists of three parts, namely, the sun above, the leaves below and the flower buds in the center. This sign is a circle, which means protection and safety. A-level signs are white characters on a green background, while AA-level signs are green characters on a white background. The logo was approved and issued by China Green Food Association.

Green food mark is a quality certification mark registered by China Green Food Development Center in the Trademark Office of the State Administration for Industry and Commerce. As a kind of trademark, logo has the general characteristics of trademark, and it will only produce value when used. If you don't use the green food sign for a long time after obtaining the right to use it, it will also hinder the management of China Greening Center. Therefore, enterprises should use green food signs as soon as possible.