To export the product model in the Taobao after-sales, you can follow the steps below:

1. Log in to your Taobao account and enter the Taobao website.

2. In the search bar at the top of the page, enter "after-sales management" and click the search icon, or directly enter "https://fuwu.taobao.com/serv/after_service/afterSale.htm" in the browser to enter the after-sales management page.

3. On the after-sales management page, you can see your after-sales order list.

4. Find the after-sales record corresponding to the order you want to export, and click the "View after-sales record" button on the right side of the order row.

5. After entering the after-sales record interface, you can see the detailed after-sales information of the order.

6. In the upper right corner of the after-sales record page, there is an "Export table" button, click it.

7. In the export options that pop up, you can choose what information to export, including product models. Check the "Product Model" option.

8. After clicking to confirm the export, the system will start to generate and download a table file containing the after-sales information and product models you selected.

Please note that the specific operation interface may vary due to updates to the Taobao website, but the general export steps should be similar. If you encounter problems during the operation, it is recommended to check Taobao's Help Center or consult Taobao customer service for more detailed guidance.