1. The personal seal is valid to the outside world, and sometimes it can replace the signature of the legal representative.

2. Financially, some bank bills must have a personal seal when they are used, and they should be backed up at the bank where they are opened.

Many companies generally have two personal seals, one of which is used for business, such as issuing a power of attorney and signing a contract. One is for financial purposes.

The use of seals has a long history in China. From ancient times to the present, from emperors to the people, there are no statistics on the number of private seals. Some are used for fun appreciation, some are used for giving away friends (including foreign friends), and more importantly, the private seal has the characteristics of personal identity.

Extended data:

The official seal must go through the formalities of registration and examination in the competent authority according to law and be publicized to the public in order to obtain the corresponding effect, while private printing is much more arbitrary, and its legal effect is far less than that of signature and handprint. The style and font of private printing are not expressly stipulated, so everyone's seal may be different.

In addition, the seal of a natural person does not need to be publicized, so others can't know whether the private seal engraved with the name is engraved by themselves, and it is even more uncertain whether the seal is stamped with the engraved seal. ?

From the point of view of protecting the legitimate rights and interests of individuals, a contract with a private seal cannot be regarded as agreeing to the relevant provisions of the contract unless the other party has evidence to prove that the private seal belongs to him and is sealed by him or provides other sufficient evidence to prove that he really approves the contract.

At present, the legal method is signature or handprint, because it is unique and can reflect personal characteristics. However, private seal can not determine the true identity of the signer, so it should be treated with caution.

Baidu encyclopedia-private seal