The two sides can sign the contract by letter, telegram, telex, email, fax, etc. A reliable electronic signature has the same legal effect as a handwritten signature or seal, and an electronic contract can tangibly express its contents and can be retrieved and consulted at any time.

legal ground

Article 469 of the Civil Code of People's Republic of China (PRC)

The parties may conclude a contract in writing, orally or in other forms.

Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.

A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.