Is effective. At present, the use of electronic signatures is restricted by some laws. Electronic seal is not applicable to the following situations:

1, involving personal relationships such as marriage, adoption and inheritance.

2, involving the transfer of land, housing and other real estate rights.

3, 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.

An electronic signature shall be regarded as reliable if it meets the following conditions:

1. When electronic signature production data 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.

Any changes in the content and form of the data message after signing can be found.