Hakka small and medium-sized leaf black tea is a strip-shaped black tea product with specific quality made from small and medium-sized leaf tea varieties (leaf area ≤ 40 cm2) grown in the Hakka Heyuan administrative area, with their buds, leaves, tender stems, etc. as raw materials, through withering, rolling, fermentation, drying, shaping, packaging and other processes. This document specifies the terms and definitions, technical requirements, production and processing hygiene requirements, test methods, inspection rules, and labeling, marking, packaging, transportation, and storage of Hakka small and medium-sized leaf black tea. This document applies to black tea products produced in the Hakka Heyuan administrative area, using buds, leaves, tender stems produced by Hakka small and medium-sized leaf tea trees as raw materials, through withering, rolling, fermentation, drying, shaping, packaging and other processes.