N-VAR 售后服务 A company's after-sales service is all the help and information that it provides to customers after they have bought a particular product. 售后服务 [business]
...a local retailer who offers a good after-sales service.
提供高质量售后服务的当地零售商
They are also attempting to keep the car buyer as a long-term customer by offering after-sales service.