2. Seal of Wang Liming Yixing Zisha Manufacturers Alliance
3. Wang Chuanhua Yixing Zisha Master Seal
4. Seal of Zhenhua and Yixing Ceramic Association.
5. Seal of Chen Zhenchun Yixing Ceramic Association
6. Seal of Liu Yixing Ceramic Art Association
7. Fan Jushi Yixing Pottery Master Seal
8. Seal of Li Junyu Yixing Zisha Craft Association
9. Seal of Xu Yixing Zisha Masters Association
10. Seal of Shao Tingdong Yixing Zisha Technology Research Center