Hello, China Postal Savings Bank needs to submit the original and photocopy of the borrower's valid identity certificate when handling small loans; Original and photocopy of the business license that has passed the annual inspection. If it is a franchise, it shall also provide the original and photocopy of the business license of the relevant administrative department; If the borrower is a non-local permanent residence, it shall provide proof materials of one-year operation or residence in the local area, such as one-year operation-related contracts, house lease contracts, various payment documents, etc. To apply for a secured loan, it is necessary to provide the original and photocopy of the guarantor's resident ID card and the guarantor's certification materials (if the guarantor is a natural person with a fixed occupation, it is necessary to provide the work unit certificate stamped with the guarantor's name, work unit, average monthly income, contact person of the unit, telephone number and official seal of the unit; If the guarantor's unit stipulates that it is not allowed to open the unit certificate, it can be replaced by the original and photocopy of the work permit and the salary slip stamped with the official seal of the unit; If the guarantor is a merchant, provide its business license) and other materials; I hope my answer is helpful to you.