Standardized Tea Grade Classification System for General Foreign Trade International trade employs a standardized system of numerical codes to classify tea grades, based on clear and widely accepted industry standards. Classic "Mee" (Chunmee) tea codes include Special Grade/Premium 41022, First Grade 9371, and Second Grade 9368, with "Yu" tea and "Xiu Mee" corresponding to lower-grade codes; among "Gunpowder" (Zhucha) teas, the mainstream code 3505 denotes top-tier "Gongxi" Gunpowder, while 9372 represents standard First Grade Gunpowder.
