What is the design concept of food safety signs?

It consists of three parts, namely, the upper sun, the lower leaves and the central bud, symbolizing the natural ecology; The color is green, symbolizing life, agriculture and environmental protection; The figure is a right circle, which means protection. AA-level green food signs and fonts are green with white background, while A-level green food signs and fonts are white with green background. The whole figure depicts a harmonious life under the bright sunshine, telling people that green food comes from the safety of pure and good ecological environment.