How to carry out anti-counterfeiting of seals

Stamps can be forged in the following ways:

1. Imprinting safety line is the most common seal safety measure, which is realized by randomly adding lines during engraving.

2. Tangible ink anti-counterfeiting/intangible ink anti-counterfeiting: Mature ink anti-counterfeiting technologies include thermal ink anti-counterfeiting, ultraviolet fluorescent ink anti-counterfeiting and infrared ink anti-counterfeiting. It can be seen that the anti-counterfeiting of printing ink means that all parts of seal imprint are visible under natural conditions, showing the same or different imprint characteristics, but reflecting their respective fluorescence effects under specific light sources.

3. Physical seal embedded with special security chip for official seal (referred to as "chip seal" for short): At present, the most practical and popular anti-counterfeiting method with the highest official recognition is to embed special security chip for the Ministry of Public Security on ordinary physical seal, and the price of chip seal is slightly more expensive than that of ordinary physical seal.

It should be noted that the above anti-counterfeiting measures are not absolute, and seals may still be forged. If you suspect that the official seal received or seen is forged, you should report it to the public security organ immediately.