In an effort to protect one of its most prized tea origins, producers in Wuyishan must now comply with a stricter set of national standards. Photo Credit: Wuyi Star Tea
China has revised its national standard for Wuyi rock tea for the first time since 2006 amid growing concern over counterfeit origin claims. China’s national standards system, commonly known as Guobiao (GB) standards, plays a central role in how tea products are classified, labeled, tested, and traded both domestically and internationally.
The revised benchmark for Wuyi rock tea (yancha), GB/T 18745-2026, is a recommended national standard widely regarded as a de facto industry requirement. It reflects a broader shift in how geographical indication teas are defined, authenticated, and enforced within the premium tea sector, a market increasingly challenged by counterfeiting and mislabeling. It supersedes the 2006 standard and was formally adopted in March, with full implementation scheduled for April 1, 2027. This upgrades earlier frameworks from descriptive language to a more verifiable system that links terroir, sensory evaluation, and traceability to product identity.
Subjective Quality to Measurable Evaluation
A notable revision is the incorporation of “rock rhyme” (yan yun), a sensory quality associated with the mineral character of Wuyi’s cliffside terroir, as a formal sensory evaluation. Yan yun is no longer solely a subjective tasting impression. It has been incorporated as a measurable attribute within aroma and taste scores, integrating terroir-linked sensory evaluation into measurable scoring criteria. For producers and buyers, this represents greater standardization in a category that previously was shaped by regional, subjective expertise.
GB/T 18745-2026 also expands the use of physiochemical indicators for varietal verification, including moisture content and laboratory-based authentication, such as gas chromatography-mass spectrometry (GC-MS) analysis, further strengthening origin traceability and geographic origin protections.
A further significant revision is the official recognition of aged yancha as a distinct category within the standard. Aged yancha has long been a key part of secondary markets, private collections, and top-tier vendor offerings, though it has never been defined under a unified regulatory framework. The updated standard now acknowledges aged yancha as its own classification, introducing clearer parameters for origin verification, quality reference, and category definition.
Geographic Protection and Food Safety
Environmental and quality standards were also addressed in the revision, with the new standard aligning with updated national pesticide residue requirements under GB 2763-2026, which sets limits for over 560 pesticide residues in food products. This integrates yancha production more closely with national food safety standards, resulting in stricter quality control requirements.
As part of the strengthened geographic origin protections, the core production region for yancha has been refined, with clearer boundaries now defined. The revised standard formally codifies the three-zone classification system of Wuyi production areas: Zhengyan (core production area), Banyan (intermediate zone), and Zhoucha (peripheral production area). These zones are now explicitly recognized as boundaries. This strengthens origin verification and batch-level traceability, ensuring a tighter quality control framework in a saturated market.
GB/T 18745-2026 reflects an incremental but meaningful tightening of China’s specialty tea standards, codifying long-standing regional practices into a structured system for evaluating the tea. This brings greater consistency and transparency to a category that has long been subject to variation. For producers, the updated standard is likely to increase compliance costs in the short term while strengthening long-term protection of geographic origin. For buyers, particularly in export markets, the standard offers improved clarity on what authentic yancha is in an increasingly competitive market.