1. First of all, Party A and Party B should fully negotiate and clarify the rights and obligations of both parties as well as the repayment plan. Depending on the specific circumstances, they can choose a loan contract, a car purchase contract or other similar contract forms.

2. Secondly, the contract should include the loan amount and interest rate, repayment plan, overdue repayment liability and other additional terms.

3. Finally, Party B and Party A must sign the contract and seal it to confirm that both parties agree and accept the terms of the contract. Both parties shall keep an original or a copy as a backup for future reference. You can check it later.