Legal analysis: the bank loan guarantor must sign and seal. Only signature is not allowed. The bank loan guarantor must sign and seal. Only signature is not allowed. The loan guarantor refers to the behavior that the guarantor and the creditor agree that when the debtor fails to perform the debt, the guarantor will perform the debt or assume the responsibility according to the agreement. A loan guarantor refers to a legal person, other organization or citizen who has the ability to pay off debts on behalf of the guarantor and creditors and can act as a guarantor.

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

Article 667 A loan contract is a contract in which the borrower borrows money from the lender, repays the loan at maturity and pays interest.

Article 668 A loan contract shall be in written form, unless otherwise agreed between natural persons.

The contents of a loan contract generally include terms such as loan type, currency, purpose, amount, interest rate, term and repayment method.

Article 669 When concluding a loan contract, the borrower shall, at the request of the lender, provide the true information about the business activities and financial status related to the loan.