within -15 days after the successful transaction, the buyer can initiate after-sales service. 1. Goods not received after successful transaction: after-sales of goods not received can be initiated.

2. partial refund is required after the transaction is successful: after-sales rights protection can be initiated, and rights protection requires selecting "No need to return goods, negotiate partial refund".

3. After the transaction is successful, you need to return the goods and get a refund:

Case 1: If you have returned the goods, you can initiate after-sales rights protection. For rights protection, you should select "Return the goods and ask for a refund".

case 2: if you haven't returned the goods, you can initiate after-sales rights protection, and you need to select "Return for Refund" for rights protection.

4. Goods need to be exchanged and repaired after the transaction is successful: after-sales rights protection can be initiated, and rights protection requires selecting "Goods need to be repaired and goods need to be exchanged".