Which country first invented the fire paint seal?
Fire paint is also called sealing paint. Legend has it that a fire lacquer seal used by Emperor Liu Bang, the ancestor of the Han Dynasty, was at an auction in Hong Kong.
Sold at auction for HK$400,000. Around 1626, the Frenchman Russo experimented with mixing tar, cinnabar and insect paint (natural lacquer in India) to heat it into fire paint, which was red or brownish-red in color. Then choose a metal mold with a suitable pattern, print it on the fire paint that has not yet solidified, and leave a clear pattern after cooling. Fire paint is often used when stationery is solidified.Even in daily use, it is often used, such as avoiding the theft of all important documents, as well as sealing the cause, etc., must be used with fire paint.

The fire lacquer seal has been around for hundreds of years, and it has once occupied an important place in the history of postal communications, both in the East and in the West. The tools used for this seal are fire lacquer wax, molten wax spoon, candle, sealing wax. Some official confidential letters in ancient times, in order to keep them secret in circulation, would be sealed with fire paint seals. In the Western Middle Ages, letters were also sealed in this way. Since the pattern on each stamp is not easy to forge, once the letter is opened, the sealing wax will be destroyed, so it is easy for the recipient to see if the letter has been opened during circulation.