1. Contact the seller: describe the problem clearly, explain the problem of the purchased paper clip and provide relevant evidence (such as photos or videos).

2. Check the after-sales policy: When purchasing goods, the seller will generally provide after-sales service policies and regulations. You can check the seller's after-sales policy first to understand the specific process and requirements for applying for after-sales.

3. Submit the application: fill in the application form or provide relevant information according to the seller's requirements and submit the application to the seller. Please ensure that the information provided is accurate and complete.

4. Waiting for processing: The seller will verify the application after receiving it. Due to the seller's after-sales service process and order quantity, the processing time may be different. Please be patient.

5. Solution: Once the seller has handled it, it will provide corresponding solutions according to the problem, such as refund, replacement or maintenance.