Legal analysis: If the seal on the back of the cash check from the issuing unit is blurred, you can cross out the blurred seal and stamp it again. If the seal on the back of the transfer check of the payee is blurred (at this time, the bill law stipulates that the remedy cannot be re-stamped), the payee can bring the transfer check and bank account receipt to the bank where the issuer has an account to handle collection. The payment procedure (without paying a handling fee) is commonly known as "back-and-forth", so you don't need to go to the issuing unit to write a check again.

Legal basis: Article 7 of the "Negotiable Instruments Law of the People's Republic of China" stipulates the requirements for signature and seal. This is one of the important contents of the Negotiable Instruments Law, because the signature on the instrument is The signature and seal directly affect the validity of the bill. The Negotiable Instruments Law stipulates that the signature of the actor is one of the absolutely necessary items to be recorded on the instrument. If the corresponding signature is missing, the instrument will be invalid; if the signature of another person is forged, it will lead to forged instruments, and some even Will violate criminal law. For natural persons, the signature can be handwritten or stamped with their own seal; however, it should be noted that they must use their real name, which should be consistent with the name on the identity document. The signature and seal of a legal person or other unit that uses bills should first have the seal of the legal person. In practice, it should be affixed with the legal person's special financial seal, and at the same time, it should also be affixed with the signature of the legal representative or agent. The personal signature of the legal representative or agent here may be a handwritten signature or affixed personal seal. In practice, it should be noted that in our country, we used to use debits or fingerprints instead of signatures. The Negotiable Instruments Law only provides for signatures, so the above two methods cannot be used.