no website on file — from open-source research, nothing to check against
Brand 'Yu' from Hangzhou Longjing Tea Industry Group; traditional producer of Xihu Longjing. Intangible Cultural Heritage of China (Longjing roasting technique) since 2009.
site not found; source: baike.baidu.com — 御牌, zhihu.com — 龙井茶品牌
The source export carried a verification date of 2026-08-16 — later than today, so the check could not have happened. The mark was removed; the original value is kept in the data.