Valid. However, from a legal risk perspective, scanning is not recommended, as it will be difficult to prove the reliability of the signature in the event of a dispute, thus failing to protect the rights and interests of the parties involved. From an evidence point of view, the scanned copy is a picture, which exists in the form of a copy and can technically be tampered with. Therefore, the proof effect of the scanned copy alone is very low. Unless the other party recognizes the scanned copy, other relevant evidence needs to be provided. Only through supporting evidence and forming a chain of evidence can the scanned copy be used as final evidence, thus having a high evidential effect. A scanned copy is equivalent to a photocopy, and it is difficult to get support from the court when litigating based on this alone. Legal basis: Article 73 of the Civil Procedure Law. Original copies of documentary evidence must be submitted. The original physical evidence must be submitted. If it is really difficult to submit original documents or items, you can submit copies, photos, duplicates, or excerpts. Foreign documents submitted must be accompanied by Chinese translations.