Stamps for printing? Is it a red stamp or a scanning stamp? Whether it is valid or not depends on the expression of will of both parties to the contract. Now, is it that one side doesn't want to agree and the other side wants to agree? If this is the case, see if the seal printed on the contract is supported by a third-party certification agency (electronic certification service agency). In this case, although the signature is handwritten, it is printed and cannot be considered as a true expression of meaning. So it can only be seen from the seal of the contract. If the signature is an electronic signature provided by a legal electronic certification service institution, it is valid; If not, it is even more difficult to determine that it is effective.