no website on file — from open-source research, nothing to check against
Oldest Yixing zisha brand; officially recognized inheritor of intangible cultural heritage, 20+ flagship stores, authenticity certification system.
website not found; legendary "Li Yong" — symbol of Yixing quality
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.