Legal analysis: According to the principle of relativity of contract, when a company applies for a real estate mortgage loan from a bank in the name of the company, it should go through the loan formalities directly with the loan bank. In principle, the signature of the company's shareholders is not required. However, according to the loan regulations of individual banks, when a company lends money, it needs the individual shareholders of the company to provide guarantee for the loan. In this case, the shareholders of the company need to sign in the bank and go through the guarantee procedures.

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

Article 394 Where the debtor or a third party mortgages the property to the creditor for the purpose of guaranteeing the performance of the debt without transferring the property, and the debtor fails to perform the due debt or realize the mortgage right according to the agreement of the parties, the creditor has the right to be paid in priority for the property. The debtor or the third party specified in the preceding paragraph is the mortgagor, the creditor is the mortgagee, and the property that provides guarantee is the mortgaged property.

Article 395 The following properties that the debtor or a third party has the right to dispose of may be mortgaged: (1) Buildings and other land attachments; (2) The right to use construction land; (3) the right to use the sea area; (4) Production equipment, raw materials, semi-finished products and products; (5) Buildings, ships and aircraft under construction; (6) means of transportation; (seven) other property not prohibited by laws and administrative regulations. The mortgagor may mortgage the property listed in the preceding paragraph together.

Article 400 To establish a mortgage, the parties shall conclude a mortgage contract in writing. A mortgage contract generally includes the following clauses: (1) the type and amount of secured creditor's rights; (2) The time limit for the debtor to perform the debt; (3) The name and quantity of the mortgaged property; (4) the scope of the guarantee.

Article 419 During the limitation of action for principal creditor's rights, the mortgagee shall exercise the right of mortgage. If it does not exercise, the people's court will not protect it.