What is the stamp pad made of?

Printed edition is a unique research treasure in China, which needs to be used for document signing, historical relics and stone carving calligraphy. According to historical records, the development of inkpad has a history of 2000 years. Inpad was used as early as the Spring and Autumn Period, Qin and Han Dynasties. At that time, the inkpad was made of clay and soaked in water when it was used. This was called mud sealing at that time. After the Sui and Tang Dynasties, with the development of society, some people developed paper. Instead, people mixed vermilion on the printing surface and printed it on paper. This is the embryonic form of inkpad. In the Yuan Dynasty, people began to mix cinnabar with oil, and then gradually developed into our modern inkpad.