1, the original data message, can reliably keep the content intact and tamper-proof, and meet the original form and file preservation requirements stipulated by law;
2. Electronic signature, which can identify the signer and signature time, prevent tampering, and meet the requirements of effective electronic signature stipulated by law;
3. The identity has been effectively authenticated by a third party and meets the authentication requirements stipulated by law.
Legal basis: Article 143 of the Civil Law of People's Republic of China (PRC) A civil juristic act that meets the following conditions is valid:
(1) The actor has corresponding capacity for civil conduct;
(2) the meaning is true;
(three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.
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.