Legal analysis: three years. The Green Food Mark is a quality certification mark officially registered by the Green Food Development Center in the Trademark Office of the State Administration for Industry and Commerce.

Legal basis: "Trademark Law of the People's Republic of China". Products that have passed the green food certification can use the green food mark in a unified format. The validity period is 3 years, starting from the day the certificate is obtained through certification. , after expiration, the production enterprise must re-apply for certification, and only if it is approved can it continue to use the mark and change the number on the mark. It takes half a year from re-application to certification. During this half-year, production companies are allowed to continue to use the green food label. If the re-application fails for certification, the company must immediately stop using the logo. In addition, within the three-year validity period, the China Green Food Development Center will inspect the products every year according to the environmental, production and quality standards of green food. If they do not comply with the rules, the center will cancel the product use mark

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The above answers are only based on the current information and my understanding of the law. Please refer to it with caution!

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