(1) The logo pattern of pollution-free agricultural products consists of ears of wheat, a check mark and the words pollution-free agricultural products. The ears of wheat represent agricultural products, and the check mark means qualified. Gold means maturity and harvest, and green symbolizes environmental protection and safety. Pollution-free agricultural products are certified by the Agricultural Products Quality and Safety Center of the Ministry of Agriculture. When identifying the authenticity of the mark, uncover or scratch off the national unified pollution-free agricultural product mark. Through the 16-digit anti-counterfeiting number on the mark, you can use the following query method to determine whether it is a pollution-free agricultural product. A: Mobile phone (China Mobile, China Unicom, PHS) SMS query: Write the 16-digit anti-counterfeiting number as the SMS content and send it to 1066958878. B: Internet query: log in and query the anti-counterfeiting logo. Through inquiry, you can not only identify the authenticity of the mark, but also learn the manufacturer, product name, brand and other related information of the certified product.

(2) The green food logo graphic consists of three parts, namely the sun above, leaves and buds below. The logo graphic is a perfect circle, which means protection and safety. Green food can be identified through four markings on the product packaging, namely: graphic trademark, text trademark, green food mark license number and the words "Used with permission from China Green Food Development Center". The meaning of the green food mark license number is:

Take LB—XX—XXXXXXXXXXA as an example (X represents a number): LB is the mark code, the two digits in the middle of the horizontal line are the product classification, and the following numbers The 1st to 2nd digits are the approval year, the 3rd to 4th digits are the approval month, the 5th to 6th digits are the province and country, the 7th to 10th digits are the product serial number, and A is the product classification.

(3) The organic food logo uses human hands and leaves as creative elements. In the logo, one hand holds a green leaf upward, implying human beings' desire for nature and life; two hands are held together, up and down, to personify the green leaf into a natural hand, implying that human beings cannot survive without nature. Human beings and nature need a harmonious and beautiful relationship for survival. The introduction of the concept of organic food is the practical application of this concept.