Atomic stamp: It is an early stamp-free stamp, also known as 10,000-time stamping. It is easy to use and has clear writing. It has been favored by users of each window unit, but its disadvantages are: it can not be repeated printing oil, easy to deform, complicated production. .

    

Penetration stamp: It is a low-cost stamp-free seal. It is easy to use and can be re-used with printed ink. However, it is thick and easy to wear. It is suitable for making some temporary business chapters.

    

Photosensitive atomic stamp: The new generation of atomic seals is not only clear in writing, durable and wearable, that is, the cover is dry and not deformed, and the refillable oil can be used tens of thousands of times. The special printing ink can be printed with special items such as metal, glass and plastic. It is especially suitable for making seals that are used frequently.

    

Self-inking stamp：It is a fixed stamp holder that is filled with a printing ink that can be used to add ink. When used, the printing table is automatically pressed once and the printing table can be changed at any time. However, the stamp holder is expensive and should not be stored and used for a long time.

    

    

Because the formula of various types of ink is different, so that it can not be mixed, so the photosensitive seal can only add photosensitive ink. The atomic seal is best to add the same brand of atomic ink. Otherwise, it may be due to different seals. The seal is hardened or deformed or corroded.