no website on file — from open-source research, nothing to check against
Pu'er factory founded by Dong Guoyang — one of the 'five golden flowers' of Menghai Tea Factory and former deputy technical director; 5000 mu of gushu in Bulangshan, brands 'Guoyang' and 'Xiangshu'.
website not found; series 经典66/88/99, awards at tea competitions
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.