Legal analysis: Yes, you must be present. Being present is to prove the fact of the guarantee, and the guarantor knows the fact and agrees to bear the corresponding responsibility. Otherwise, there is no way to prove the facts of the guarantor, and the law will not admit it. Once something happens, the guarantor will not bear the responsibility. The loan guarantor must sign on the spot. If the guarantor is a company, it shall be stamped with the company seal or signed by the legal representative. The loan guarantor establishes a guarantee contract relationship with the lender. The guarantor does not sign the guarantee contract or the guarantor in the loan contract, and the guarantor and the lender do not establish a guarantee contract relationship, so there is no guarantee responsibility. Therefore, as a guarantor, you must sign the agreement on the spot, which is the most basic condition for fulfilling the guarantor's obligations.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 684 The contents of a suretyship contract generally include the type and amount of the principal creditor's rights to be secured, the time limit for the debtor to perform the debt, the way, scope and period of suretyship, etc.

Article 685 A suretyship contract may be a separate written contract or a suretyship clause in the principal creditor's rights and debts contract. If the third party unilaterally makes a written guarantee to the creditor, and the creditor accepts it without raising any objection, the guarantee contract is established.