no website on file — from open-source research, nothing to check against
Yixing zisha brand 'Yuyige'; focus on collectible handmade teapots, authenticity certification, popular on JD.
site not found; positioning as 'a stable choice for collectors'
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.