legal analysis: electronic seal is not an electronic seal pattern, and only an electronic seal pattern has no legal effect, and it must meet certain conditions before it has legal effect. The law has the following provisions on valid electronic seals. The Electronic Signature Law stipulates that a reliable electronic signature has the same legal effect as a handwritten signature or seal. The requirements for a reliable electronic signature are as follows: 1. When the electronic signature is used for electronic signature, it belongs to the electronic signer; 2. When signing, the electronic signature production data is only controlled by the electronic signer; 3. Any changes to the electronic signature after signing can be found; 4. Any changes to the content and form of the data message after signing can be found. Therefore, in addition to meeting the requirements of reliable electronic signature, it is also necessary to meet the requirements of the law on the original form and preservation conditions of electronic contracts. Therefore, the electronic signature that meets the above conditions is effective. The official seal is a symbol of a company's legal operation. After a company is registered, it needs to engrave the official seal and put it on record at the institution authorized by the public security, and only after holding the official seal issued by the public security organ can it conduct foreign business. Therefore, stamping the contract with the official seal is the embodiment of strengthening the business management of the enterprise, and it is also a check on the operational risk control. After the contract is stamped with the official seal, it means that it is authorized by the company, and it is necessary to be responsible for the performance of the contract and cannot be denied.

legal basis: electronic signature law of the people's Republic of China

article 3 in civil activities, the parties may agree to use or not use electronic signatures and data messages.

if the parties agree to use an electronic signature or data message, they shall not deny its legal effect just because it is in the form of electronic signature or data message.

The provisions of the preceding paragraph do not apply to the following documents:

(1) Personal relationships such as marriage, adoption and inheritance are involved;

(2) involving stopping water supply, heat supply, gas supply and other public utility services;

(3) other circumstances in which electronic documents are not applicable as stipulated by laws and administrative regulations.

article 14 a reliable electronic signature has the same legal effect as a handwritten signature or seal.