after-sales serviceBrE /ˌɑːftə ˌseɪlz ˈsɜːvɪs/ 🔊NAmE /ˌæftər ˌseɪlz ˈsɜːrvɪs/ 🔊 noun [uncountable] the fact of providing help to customers after they have bought a product, usually involving doing repairs that are needed or giving advice on how to use the product 售后服务