A fire seal is a traditional sealing material commonly used to seal letters, documents or packages. Its origins can be traced back to ancient times, and it is widely used in international diplomacy, official documents, and private letters.

The fire seal represents seriousness and irreversibility. Since the fire seal cannot be removed or reused, it is seen as a way of emphasizing authenticity, integrity and confidentiality. In the past, the application and unsealing process of the lacquer seal required special tools and techniques, which increased its anti-counterfeiting properties and protected the document's security.

In modern times, although fire seals have been replaced by technologies such as email and digital signatures, they are still used on certain special occasions. For example, some official documents, certificates, souvenirs and gift packages will use fire paint seals to increase their uniqueness and solemnity.

In short, the fire seal represents the integrity, authenticity and confidentiality of important documents, and has historical tradition and unique value.