1. Log in to the Pinduoduo merchant backend: Use a Pinduoduo merchant account to log in to the backend management system.
2. Enter after-sales management: In the left menu bar of the background interface, find "After-sales Management" and click to enter.
3. Find the orders that require proof: On the after-sales management page, find the option to provide evidence, click to enter, and you can view the list of orders that require proof.
4. Provide evidence materials: Click on the order that requires evidence, and provide relevant evidence based on the actual situation, such as product quality inspection report, product source certificate, etc. Make sure the evidence is true, clear and complete.
5. Submit evidence materials: On the order details page, find the "Submit Evidence" button and click to upload evidence materials.