Legal analysis: Products that have passed green food certification can use the green food mark in a unified format. The validity period is 3 years, starting from the day when the certificate is obtained through certification. After the expiration, the production enterprise must re-apply for certification. Only after the application is approved can you continue to use the mark and change the number on the mark.

Legal basis: Article 2 of the "Green Food Label Management Measures" refers to green food produced in a good ecological environment, produced in accordance with green food standards, implementing full quality control and obtaining a green food label The right to use safe, high-quality edible agricultural products and related products.

Article 3 of the "Green Food Label Management Measures" Green food labels are registered as certification trademarks in accordance with the law and are protected by law.

Article 18 of the "Green Food Label Management Measures" The green food label use certificate is valid for three years. If the certificate expires and it is necessary to continue to use the green food label, the label user shall submit a written renewal application to the provincial agency three months before the expiration date. Provincial work agencies should organize and complete relevant inspections, testing and material review within 40 working days. If the applicant passes the initial review, the China Green Food Development Center will make a decision within ten working days on whether to approve the renewal. If the renewal is approved, the green food mark use contract will be renewed with the mark user, a new green food mark use certificate will be issued and announced; if the renewal is not granted, the mark user will be notified in writing and the reasons will be given. If the user of the mark fails to apply for renewal within the time limit, or if the application for renewal is not approved, he shall not continue to use the green food mark.