As an e-commerce platform, Alibaba provides buyers with a series of after-sales service measures.

The following are common after-sales service methods of Alibaba:

1. Return and refund: After receiving the goods, if the buyer finds that the goods have quality problems or do not match the description, he can apply for a return and refund. The buyer needs to apply for a refund within the specified time and return the goods to the seller according to the instructions.

2. Return and exchange: If the goods received by the buyer have quality problems or are incomplete, he can apply for a return and exchange, that is, return the original goods and exchange them for the same or similar goods. The buyer needs to return the goods according to the seller's requirements and complete the exchange procedures after reaching an agreement.

3. Repair/refund: For some large items or items that need to be installed and used, if there are quality problems or they cannot be used normally, the buyer can apply for repair, and the seller will provide after-sales repair services. If repair is not possible, the buyer can request a refund.

4. After-sales complaints: If buyers encounter after-sales problems that cannot be resolved, they can submit complaints to the Alibaba platform. The platform will intervene in the investigation and try its best to coordinate the buyer and seller to resolve the dispute.

Please note that specific after-sales service measures may vary depending on the seller's policies and platform regulations. Buyers are advised to read the seller's after-sales service policy before purchasing and fully communicate with the seller to obtain better after-sales protection.