1. Both borrowers have clear identities, including their names, ID numbers, addresses and other basic information.
2 loan amount, loan term, loan interest rate and other agreements are clear, and the purpose of the loan is stated.
3. Both parties sign or press their fingerprints to confirm that both parties agree to borrow money and recognize the contents of the loan.
4. The IOUs do not contain contents that violate laws and regulations, public order and good customs or infringe upon the legitimate rights and interests of others.
5. The format of the IOU conforms to the legal provisions, including the title, text, signature and date.