Legal analysis: 1. The electronic signature of the legal person in the contract is valid. Electronic signature is data in electronic form, which is associated with data message (electronic document, electronic information) to identify the identity of the signer and show that the signer approves the content of the data message. 2. Electronic signature can effectively authenticate online identity in the form of digital signature through third-party authoritative authentication, helping each subject to identify each other's identity and show their own identity, which has the functions of authenticity and non-repudiation. Different from physical ID cards, digital certificates also have the characteristics of security, confidentiality and tamper resistance, which can effectively protect and securely transmit information transmitted by enterprises on the Internet.

Legal basis: People's Republic of China (PRC) Electronic Signature Law.

Article 3 In civil activities, the parties may agree on the use or non-use of electronic signatures and data messages in contracts or other documents and documents. A document in the form of electronic signature or data message agreed by the parties shall not be denied its legal effect just because it is in the form of electronic signature or data message. The provisions of the preceding paragraph shall not apply to the following documents:

(a) involving marriage, adoption, inheritance and other personal relationships;

(two) involving the transfer of rights and interests of real estate such as land and houses;

(three) involving the cessation of water supply, heating, gas supply, power supply and other public utilities services;

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

Article 5 A data message that meets the following conditions shall be deemed to meet the original form requirements stipulated by laws and regulations:

(a) It can effectively express the content and can be used at any time;

(2) It can reliably ensure that the content remains complete and unchanged from the time it is finally formed. However, adding endorsements to data messages and changing forms in the process of data exchange, storage and display do not affect the integrity of data messages.

Article 6 Data messages that meet the following conditions shall be deemed to meet the requirements for document preservation as stipulated by laws and regulations:

(a) It can effectively express the content and can be used at any time;

(2) The format of the data message is the same as that when it was generated, sent or received, or the format is different, but it can accurately represent the content originally generated, sent or received;

(3) Being able to identify the sender and receiver of the data message and the time of sending and receiving.