When handling the business license, the industrial and commercial bureau will leave a document signed by the legal representative, and then check the handwriting when there is any change or cancellation in the future. If the handwriting is inconsistent, the industrial and commercial bureau will invite the legal representative to be present to explain the situation and sign the letter of guarantee. Therefore, if the business license is not signed by the legal person, it should be clearly stated who will handle it and who will sign it on behalf of it, and there will be no penalty for signing it. The general industrial and commercial department will have a "Letter of Commitment on Entrusted Agency" with entrusted matters, requiring a copy of the client's ID card to be affixed, and then the legal representative will personally sign and affix the official seal before the client can handle it.