The size of a personal signature stamp depends on one's usual writing habits, and there is no specified size requirement. For example, some leaders of public institutions like artistic signatures, so the font is relatively large. For example, some signatures that do not require graffiti need to be standardized.

Engraving a personal signature seal is to make a seal with almost the same size and style according to the signature. Generally speaking, it is suggested that the largest signature stamp should not exceed 60mm and the smallest one should not be less than 20 mm. ..

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Handprint is a signature seal, which is engraved according to the owner's own handwriting. I hold and use my signature, which shows the true meaning of the parties and has the same effect as my signature.

However, in judicial practice, if it is impossible to judge that the signature is my own use, and the signer himself can't confirm it because of loss of will, or can't judge the signer's explicit authorization and expression of will from other evidence, it is not enough to represent the signer's true meaning only by signing, and the signed document has no signature effect.