Detailed reasons:

Bank mortgage loan requires me to provide my valid identity certificate. If I get married, my colleagues need to provide my spouse's identity certificate, marital status certificate and household registration book.

If my loan is used for business operation, I need to provide five certificates of business, business-to-business flow, financial statements, upstream and downstream transaction contracts and venue lease contracts;

As long as I bring the above materials, I can apply for a mortgage loan from the bank, and I don't need to provide a tax invoice.

Summary: bank loans need the above materials, which are not mentioned above and do not need to be provided. Only when I meet the requirements of bank loans can I apply for a mortgage loan.