Article 3 of the Electronic Signature Law stipulates that the parties may agree to use or not use electronic signatures and data messages in contracts or other documents and vouchers in civil activities.

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 cessation of water supply, heating, gas supply and other public utilities services;

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

In addition to these three situations, you can use electronic contract electronic signature to sign valid contracts and documents.