Generally speaking, a bank loan contract cannot be signed on behalf of the borrower, but must be signed and sealed by himself. However, if someone else signs on behalf of the borrower, it can be regarded as the name of the borrower's entrusted agent, and the borrower can press his handprint as his consent to the agent. The loan contract is valid.
legal ground
Article 162 A civil juristic act performed by an agent in the name of the principal within the scope of his agency authority is valid for the principal.
Article 168 of the Civil Law of People's Republic of China (PRC) prohibits self-agency, agents of both parties and exceptional agents from carrying out civil juristic acts with themselves in the name of the principal, unless the principal agrees or ratifies. An agent shall not, in the name of the principal, carry out a civil juristic act at the same time with other people he represents, except with the consent or ratification of the principal.