According to the existing relevant laws "Electronic Signature Law", a reliable electronic signature has the same legal effect as a handwritten signature or seal! An electronic signature shall be regarded as reliable if it meets the following conditions:

(1) When the electronic signature production data is used for electronic signature, it belongs to the exclusive rights of 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 signature can be found;

(4) Any changes to the content and form of the data message after signature can be found.

Electronic contracts are generally signed through third-party platforms, because it is necessary to ensure that the signed contracts have legal effect and meet the functions of preserving and obtaining evidence.