Geographical indications of tea are not easy to handle. Applicants need to apply to the holder, and the following materials should be submitted when applying: an application for the use of signs. Qualification certificate of production operator. Production and operation plan and corresponding quality control measures. A written commitment to standardize the use of geographical indications of agricultural products. Property right certificate or lease contract of the business place of the enterprise. The product inspection report issued by a qualified inspection agency complies with the Detailed Rules for Examination of Tea Production License and GB/T 14456.2 Green Tea Part 2: Big Leaf Green Tea [all undated cited documents in the above standards, and the latest version (including all revisions) is applicable to this document]. The producer's production scale, personnel, self-inspection means, raw material base, fresh leaf procurement, production and quality management system and other certification materials.