On July 25, the Pu'er Sunwah National Tea Factory welcomed participants of the "Application of Advanced Fertilizer Processing Technology in Green Agricultural Production" training program. The program was organized by the Department of International Cooperation under China's Ministry of Science and Technology, with participants including teachers and graduate students from universities and research institutes in Laos, Cambodia, Indonesia, Sudan, and Egypt.

On the same day, the Malipo Sunwah National Tea Factory hosted the China (Malipo) – Vietnam (Tuyen Quang, Lao Cai) youth friendship exchange delegation, themed "Under the Same Blue Sky, Singing the Same Song." The delegation included 39 members led by Mai Thi Thanh Binh, Deputy Director of the Tuyen Quang Provincial Department of Education and Training, and 32 members led by Luyen Huu Chung, Director of the Lao Cai Provincial Department of Education and Training.